Report:MEDLINE/Major Recent Updates

Major Recent Updates

See the Intellogist update policies for more information.

January 2013

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

A press release on the STN International website states that "the MEDLINE reload on STN (effective January 26, 2013) includes enhancements such as records with updated 2013 MeSH (Medical Subject Heading) indexing, the 2013 MeSH Thesaurus and four new fields":^[1]

• Revised 2013 MeSH - STN loaded the revised 2013 MeSH vocabulary on December 8, 2012.
• New Field - UNII - The new UNII search and display field provides UNique Ingredient Identifier information.
• New Field AUID - The Author Identifier field is expected to include author identifier information from the ORCID (Open Researcher and Contributor ID) registry.
• New Fields for Electronic Publications EPD and EPY - Search and custom display electronic publication date information for documents indexed in MEDLINE using the new /EPD (Electronic Publication Date) and /EPY (Electronic Publication Year) fields.
• Ahead of Print Electronic Publications - Changes for 2013 to STN record processing for EPUB AHEAD OF PRINT records include:
  • EPUB AHEAD OF PRINT records will now be updated as new or additional information becomes available
  • EPUB AHEAD OF PRINT records removed from PubMed will be retained on STN to benefit prior art searches
  • Records are easily identified by the EPUB PMID WITHDRAWN tag in the /AN and /FS fields
  • Records with the EPUB PMID WITHDRAWN tag will be updated at the annual reload

See the full press release here.

According to the January 2013 issue of the Dialog Chronolog:^[2]

MEDLINE® is reloaded every year because the National Library of Medicine (NLM) re-indexes relevant documents from the whole database with changed medical terms. The MEDLINE database on ProQuest Dialog is in the process of being reloaded to accommodate changes to the MeSH Thesaurus. In mid-December the NLM completed its work on the annual reload and has started to supply new MEDLINE documents again. 2013 reload data was received from the NLM in mid-December and should be ready to load into production during January, along with the 2013 thesaurus.

Until then, the 2012 thesaurus remains in place in MEDLINE and ToxFile®. The majority of records will still work with the 2012 thesaurus, but any new records with 2013 terms in them will not. This is our normal practice and should be familiar if you use MEDLINE regularly.

December 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the December 2012 issue of the Dialog Chronolog:^[3]

• MEDLINE Publisher: New file on legacy Dialog - MEDLINE® Publisher (File 152), new on legacy Dialog, contains records with a status of “Publisher” extracted from the National Library of Medicine (NLM) PubMed database. A “Publisher” record in PubMed is an initial version of a record prior to its distribution by NLM as a MEDLINE record. These records subsequently change status in PubMed to “In Data Review.” When the status changes in PubMed, the records are supplied by NLM for the first time as MEDLINE records and are added to legacy Dialog MEDLINE Files 154 and 155. Until now, the Publisher status records have not been available on legacy Dialog.

According to the NLM Technical Bulletin:^[4]

Two changes were made to the current 2013 MeSH Vocabulary.

• A new MeSH heading Esomeprazole Sodium with the entry term Nexium was created.
• The entry terms Esomeprazole and Nexium were removed from the MeSH heading Omeprazole.

MEDLINE citations will be updated to reflect these changes. New MeSH files are available to download.

According to the NLM Technical Bulletin:^[5]

Broad Subject Terms are MeSH headings that describe the overall coverage of an indexed journal. These terms, which are also searchable in the NLM Catalog database, have recently been updated as follows:

Change:

Physical Medicine and Rehabilitation

[was Physical Medicine]

Deletion:

Rehabilitation

[now included as part of Physical Medicine and Rehabilitation]

Addition:

Computational Biology – includes bioinformatics and systems biology

[mostly previously included as part of Biology]

Other edits to adjust various "includes," "see," and "see also" notes were also made.

According to the NLM Technical Bulletin:^[6]

As of December 10, PubMed/MEDLINE citations, the MeSH database, and the NLM Catalog were updated to reflect 2013 MeSH. The MeSH translation tables were also updated on December 10. Now that end-of-year activities are complete, MEDLINE/PubMed may be searched using 2013 MeSH vocabulary. See MEDLINE Data Changes — 2013 for details on the data changes. On December 11, NLM resumed daily (Tuesday-Saturday) MEDLINE updates to PubMed (including the backlog of citations indexed since November 14 with 2013 MeSH).

According to the NLM Technical Bulletin:^[7]

The 2013 release of the Medical Subject Headings (MeSH) includes improvements in a variety of areas including new ingredient identifiers from the FDA, a redesign of the Carboxylic Acids tree structure and new terms from the disease portion of the Online Mendelian Inheritance in Man (OMIM).

See the full article here.

November 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

The NLM Technical Bulletin has published a list of MEDLINE Data Changes for 2013. The list of MEDLINE Data Changes for 2013 includes details on the following information:^[8]

• MeSH Vocabulary Updated for 2013 - The MeSH Section homepage provides a link under "All About MeSH" to the Introduction of 2013 MeSH and under "Obtaining MeSH" to download electronic versions.
• Updated MeSH in MEDLINE Citations - MEDLINE records with updated MeSH will be in PubMed in mid-December 2012.
• New MeSH Headings - 302 new MeSH Headings were added to MeSH in 2013.
• Brand New Concepts - You can browse all of the new 2013 concepts on the MeSH New Descriptors Web page.
• Changes to MeSH Headings - This year 56 MeSH Headings were either changed or deleted and replaced with more up-to-date terminology. During YEP, NLM updates MeSH headings on MEDLINE citations.
• New Publication Type (PT) for 2013 - Personal Narratives was reintroduced as a new Publication Type. The publication type will be used for accounts of personal experiences. Users may recall that in 2011 Personal Narratives did exist as a Publication Type but in 2012 it was replaced by the publication type Autobiography. In 2013 MeSH, Personal Narratives and Autobiography are separate publication types and both available for use.
• Entry Combination Revisions - This year during YEP, NLM will again retrospectively replace certain MeSH heading/subheading combinations, known as Entry Combinations, with the new precoordinated MeSH heading. If you get no retrieval for a MeSH Heading/subheading combination check the heading in the 2013 MeSH Browser to see if the Entry Combination information indicates a different term. There are 98 new Entry Combinations for 2013 listed in a separate table.
• Author Reply to a published letter - Beginning with 2013 publication year, NLM is instituting a substantive change in the MEDLINE citations policy for indicating an author reply to a published letter. Under the new policy, a separate citation is now created for an author reply no matter the issue in which it is published. For more information on this policy change, see the article, Author Replies to Comments to be Cited Separately in MEDLINE/PubMed.
• ELocationID - In October 2012 NLM implemented a new process whereby if a publisher provides a doi in the ArticleId element in their publisher XML submission, and did not also supply data in the ELocationID field, then we will copy that data into the MEDLINE ELocationID field in the MEDLINE citation. Retrospectively, we followed this same process and copied the doi data from ArticleId to ELocationID, if no other data existed in the ELocationID field, for citations from 2008 forward. 2008 was the year when NLM introduced the ELocationID field.
• Grants - The Grant Number Information Found in the GR Field in the MEDLINE/PubMed Web page has been updated to include new two-letter grant codes and their associated organization abbreviations. There is also a change for one of the organization name acronyms. Beginning in October 2012 NLM is able to carry Veterans Affairs (VA) and Patient-Assisted Outcomes Research Institute (PCORI) funding information for citations, when that information has been deposited in the NIH Manuscript Submissions (NIHMS) system. Starting in November 2012 NLM is able to add European Research Council funding information. Users may search for these new organizations using the abbreviation qualified by the [gr] search tag, e.g.:
  • VA [gr]
  • PCORI [gr]
  • European Research Council [gr]
• Identifier - The NameID field was created in 2010; its name was changed this year to Identifier. To date this field has not yet been used. Identifier is intended to contain a unique identifier associated with the author, corporate author or investigator name. The value in the Identifier attribute Source (for example, ORCID) designates the organizational authority that established the unique identifier. MEDLINE/PubMed citations may include Identifier element and its attribute Source, if supplied by the publisher.
• OtherAbstract - Starting with the 2013 system, NLM will start indicating abstracts not in MEDLINE/PubMed but available from the publisher’s Web site.
• Registry Number - Beginning with 2013 MeSH, the Unique Ingredient Identifiers (UNIIs) from the Food and Drug Administration (FDA) Substance Registration System are included in the MeSH Supplementary Concept Record (SCR). In MeSH, the UNIIs serve as a new system of unique identifiers supplementing existing Chemical Abstracts Service (CAS) registry numbers and Enzyme Commission (EC) numbers. For more information on the UNIIs, see the article, A New System of Registry Number Identifiers for Chemicals in the MeSH Database.
• Structured Abstracts - In the fall of 2012, NLM added 304 new labels to the list of structured abstract labels. This brings the total of vetted and mapped labels to 1,949.

The NLM Technical Bulletin reminds users of Medline/PubMed year-end processing dates:^[9]

November 14, 2012: NLM temporarily suspends the addition of fully-indexed MEDLINE citations to PubMed. Publisher-supplied and in process citations will continue to be added.

Mid-December 2012: PubMed MEDLINE citations, translation tables, and the MeSH database will have been updated to reflect 2013 MeSH. For further information, see MEDLINE/PubMed Year-End Processing Activities.

According to the NLM Technical Bulletin:^[10]

MEDLINE journals regularly include letters from readers who wish to comment on published articles. Authors often respond to these letters, writing what are known as author replies. According to current National Library of Medicine policy, the Index Section does not create a separate MEDLINE citation for an author reply that appears in the same issue as the letter, and the reply is not indexed with MeSH. Rather, pagination for the author reply is added to the citation for the commenting letter, following the phrase "author reply."

The author reply policy is changing. To enhance the completeness of the MEDLINE/PubMed record and promote better access, author replies to commenting letters will be cited separately and indexed with MeSH effective with the 2013 MeSH update. Citations for author replies will be linked to the commenting letter and to the original article as per the following "mock up" example of a partial citation in PubMed.

Example of the new PubMed Abstract (text) display for a citation for Author Reply in:

Med Educ. 2013 Sep;25(9):533.

The future of medical education: a reply to Carter.

Taylor AB, Smith SM

Comment on

Med Educ. 2013 Sep;25(9):532-3. [Link to letter commenting on original article]

Med Educ. 2013 May;25(5):234-8. [Link to original article]

Author responses published with "Reply," "Author Reply," or a similar non-distinctive title will have their titles amended to include the PMID of the commenting letter in the format "Author Reply: To PMID 12345678."

This author reply policy change will be implemented prospectively for journals with a publication date of 2013 and later.

September 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the NLM Technical Bulletin:^[11]

The National Library of Medicine (NLM) has updated its list of structured abstract labels. This updated list, along with the NLM-assigned broader category mappings, can be downloaded for free from the Structured Abstracts resource page which also provides NLM guidelines and other background information to assist licensees or researchers.

The Updated Label List and NLM Category Mappings file contains 1,949 labels: 1,645 labels (from the 2011 Label List) and 304 new labels. Each label has a corresponding broader NLM Category map, and an indication of whether the label is classed as an "Ending Label" concept. The new 304 label entries have a timestamp of "|20120831".

Other changes related to the release of the newly updated file of structured abstract labels include:

• Revision of completed MEDLINE (medline [sb]) and PubMed-not-MEDLINE (pubmednotmedline [sb]) status citations in PubMed that contain one or more of the 304 newly verified and mapped labels to reflect the new labels, effective on or about September 11, 2012.
• Revision of PubMed citations that are in "as supplied by publisher" status (publisher [sb]), effective September 12, 2012.

According to the NLM Technical Bulletin, the 2013 Medical Subject Headings (MeSH) are now available. See this article for more information.^[12]

August 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the NLM Technical Bulletin:^[13]

Food and Drug Administration (FDA) Substance Registration System (SRS) - Unique Ingredient Identifiers (UNIIs) are being introduced into the Medical Subject Headings (MeSH) vocabulary starting with the 2013 MeSH Supplementary Concept Records (SCRs). The UNIIs are an integral part of the FDA Substance Registration System. They appear in several databases such as the Veterans Administration National Drug File Reference Terminology, the USP Dictionary of United States Adopted Names (USAN) and International Drug Names (INN), and the RxNorm database. Each UNII is a unique series of ten characters that includes a check digit to ensure data integrity (see Figure 1).

The UNIIs will occur in the RN (Registry Number) field of MeSH Supplementary Concept Records (SCRs) for chemicals with structures, and serve as a new system of unique identifiers that will enhance existing Chemical Abstracts Service (CAS) registry numbers and Enzyme Commission (EC) numbers. An SCR contains one or more concepts that each allow only one RN number occurrence. Therefore, the UNII insertion process will retain any replaced CAS registry number or EC number by moving it to Related Number (RR) fields in the MeSH record. Note that in PubMed, any RN or RR value can be searched (either with no search tag or with the [rn] search tag) to retrieve the concept; all RR occurrences map to the RN value of the record. Therefore, moving CAS registry or EC numbers to RR fields should not affect existing searches using these values. Terms in MeSH that match the FDA Substance Registration System will receive an additional Thesaurus ID of FDA SRS (20xx), where (20xx) is the year the UNII for that term was first associated with the MeSH concept. This initial update will affect approximately 8,000 SCR records for the 2013 MeSH year.

See this article for more information.

According to the NLM Technical Bulletin:^[14]

A new PubMed search feature is now available that allows a search for structured abstracts in PubMed.

In a PubMed search box, type:

hasstructuredabstract

This search retrieves over two million citations. (Note: This search does not include citations with the status of publisher, i.e., publisher [sb].)

This structured abstract retrieval set is a subset of this search:

hasabstract

May 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the May 2012 issue of the Dialog Chronolog:^[15]

Additional Publisher records have been added to MEDLINE® on ProQuest Dialog from 2010, 2011 and early 2012, bringing our total number from approximately 80,000 to about 150,000. Sometimes known as “ahead of print” records, the NLM’s official name for them is Publisher records. See related article in ProQuest Updates.

• Publisher records dated 2012: 90,617
• Publisher records dated 2011: 56,935
• Publisher records dated 2010: 2,114

These Publisher records are now kept in the database instead of being deleted with each annual reload.

April 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the April 2012 issue of the Dialog Chronolog, the following feature is now available on ProQuest Dialog:^[16]

View the Embase®, MEDLINE® and ToxFile® thesauri hierarchically to select exact terms for your search, enabling easier access to scope notes and qualifiers. Designate Explode and/or Major Descriptor to each term in the thesaurus.

According to the NLM Technical Bulletin:^[17]

NLM now carries Autism Speaks as a granting organization in the Grant Number (GR) field in PubMed. The grant information may be the organization name only, or the name and the grant number. Autism Speaks funding information is added to citations from the NIH Manuscript Submission (NIHMS) system only.

On or before June 1, 2012 NLM will begin carrying PEPFAR as a granting organization in the GR field when a published article has an acknowledgement of funding support from the President’s Emergency Plan for AIDS Relief (PEPFAR). PEPFAR funding information may also be added to citations from the NIHMS system.

When a granting organization is added to a citation based on the acknowledgement of funding support in the published article, NLM also adds publication types to identify financial support of the research that resulted in the published papers. For more information about the use of these publication types please see: Funding Support (Grant) Information in MEDLINE/PubMed.

PubMed Abstract Display

Grant Support

• AS2617/Autism Speaks/United States
• PEPFAR/United States

Searching Details

Search for the new granting organization using the full name:

• autism speaks [gr]
• pepfar [gr]

An announcement from Information Today described the release of MEDLINE Complete on EBSCO:^[18]

EBSCO is pleased to announce that MEDLINE Complete, the leading source of full text for medical research, is now available.

MEDLINE Complete is the largest full-text companion to the MEDLINE index, containing:

• More than 2,000 full-text medical journals
• Full text for many of the most used journals in the MEDLINE index with no embargo
• Ongoing full text and deep backfile coverage for many key journals

March 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the March 2012 issue of the Dialog Chronolog:^[19]

• MEDLINE® has been reloaded with the 2012 MeSH® by the National Library of Medicine (NLM) on both legacy Dialog and ProQuest Dialog. This year 454 descriptors were added; 42 were changed and 15 were deleted. See the list at the NLM. The MeSH descriptors in all records now match the new MeSH thesaurus.
• “Versioning” is a model of publishing whereby publishers release multiple versions of the same article, sometimes in quick succession and sometimes almost as soon as the original article has been published. To associate versioned articles with each other, the NLM is now creating an individual citation for each article’s version and assigning the same accession number to each one with a variable version ID (e.g., 12345678v2, 12345678v3, 12345678v4, etc.) Note the first in a series of versions has no trailing ‘v1’. The Version ID supplied by the publisher will identify the specific version. The NLM does not expect many journals will publish versions, so the incidence of versioned citations is expected to be small. As of February 2012, there are only two citations in MEDLINE with version IDs: 20029611 has two versions and 20029614 has 10 versions. They are both from the journal PLoS Currents.

According to the NLM Technical Bulletin:^[20]

In January 2012, NLM completed the final update of the Meeting Abstracts Collection, adding the remaining 3,370 meeting abstracts from the 2010 International Conference on AIDS (conference total of 6,070 meeting abstracts) and 1,436 abstracts from the 2010 AcademyHealth Meeting. The entire collection (133,857 meeting abstracts) was reindexed using 2012 MeSH.

The Lister Hill National Center for Biomedical Communications (LHNCBC) loaded the updated, and now static, collection to the LHNCBC Gateway pilot project on January 27, 2012.

For more information, see the NLM Technical Bulletin article Reminder: NLM Gateway Changing.

February 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the "PubMed New and Noteworthy" RSS feed, "the PubMed Text Version has been retired and the web site automatically redirects to PubMed Mobile."^[21]

According to the NLM Technical Bulletin:^[22]

PubMed now supports versioned citations. Revisions, scientific updates, and updates of reviews are examples of content that could be versioned. Versions are not intended for correcting specific errors in an article, for which published errata notices should continue to be used (see Fact Sheet).

See this news release for more information on versioned citations in PubMed.

According to the NLM Technical Bulletin:^[23]

PubMed subject subset strategies are reviewed each year to determine if modifications are necessary. Modifications may include revisions due to changes in Medical Subject Heading (MeSH) vocabulary or MEDLINE journals, adding or deleting terms, and changing parts of a strategy to optimize retrieval. The following subset strategies were recently revised:

• AIDS
• Cancer
• Complementary Medicine
• History of Medicine
• Toxicology
• Veterinary Science

According to STNewsline February 2012:^[24]

New features and enhancements are now available with the STN reload of MEDlars onLINE (MEDLINE/LMEDLINE), produced by the U.S. National Library of Medicine (NLM).

Revised 2012 MeSH

The revised MeSH (Medical Subject Headings) vocabulary for 2012 was loaded on STN on December 11, 2011. MEDLINE records have been completely updated using the 2012 version of the MeSH vocabulary.

Changes to the MeSH vocabulary include:

• 454 new terms
• 42 terms replaced by more up-to-date vocabulary
• 15 deleted terms

For the most comprehensive searching in MEDLINE, consult the updated MeSH thesaurus for new or better search terms.

Review your SDIs running in MEDLINE with the new MeSH vocabulary to determine whether updating is necessary.

New Search Fields

The new RE.EX and RAU.EX search fields provide expanded capabilities for searching cited reference and cited reference author information.

RAU.EX Search Field

MEDLINE searches using the new RAU.EX field automatically retrieve reference author names with single initials even when multiple initials are used in the search query. This expands the number of results retrieved.

=> S WELSH T H?/RAU

L22 19 WELSH T H?/RAU

=> S WELSH T H?/RAU.EX

51 WELSH T?/RAU

19 WELSH T H?/RAU</p <p>L23 51 WELSH T H?/RAU.EX

(WELSH T?/RAU OR WELSH T H?/RAU)

The new RE.EX field for cited references works similarly to the RAU.EX search field for cited reference authors.

Evaluate the relevance of additional results retrieved using RE.EX and RAU.EX.

January 2012

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the NLM Technical Bulletin,"the Grant Number Information Found in the GR Field in MEDLINE/PubMed Web page has been updated for both new two-letter grant codes and their associated organization abbreviations." See the article at the NLM Technical Bulletin for a full list of "New Grants" and "Changes to Existing Grants."^[25]

December 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the NLM Technical Bulletin:^[26]

Broad Subject Terms are MeSH headings that describe the overall coverage of an indexed journal. These terms, which are also searchable in the NLM Catalog database, have recently been updated as follows:

Change:

• Clinical Laboratory Techniques
• [was Laboratory Techniques and Procedures]

Addition:

• Zoology - includes Entomology
• [previously part of Biology]

Other edits to adjust various "includes," "see," and "see also" notes were also made.

According to the NLM Technical Bulletin:^[27]

As of December 13, PubMed® MEDLINE® citations, the MeSH® database, and the NLM® Catalog were updated to reflect 2012 MeSH. The MeSH translation tables were also updated on December 13. Now that end-of-year activities are complete, MEDLINE/PubMed may be searched using 2012 MeSH vocabulary. See MEDLINE Data Changes — 2012 for details on data changes as well as links to other pertinent MEDLINE and MeSH-related articles from the sidebar on the right. On December 13, NLM resumed daily (Tuesday-Saturday) MEDLINE updates to PubMed (including the backlog of citations indexed since November 16 with 2012 MeSH).

According to the NLM Technical Bulletin:^[28]

The United Kingdom granting agency Arthritis Research Campaign has changed its name to Arthritis Research UK. NLM® will be maintaining all MEDLINE® citations to reflect this new name in PubMed® in mid-December for both searching and display. In the meantime, In Process records may show with the new grant funding name and you’ll have to use both names for comprehensive retrieval until the new PubMed system is available (expected the week of December 12).

Display Example:

Old:

Grant Support

17356/Arthritis Research Campaign/United Kingdom

New:

Grant Support

17356/Arthritis Research UK/United Kingdom

According to the NLM Technical Bulletin, a full list of MEDLINE data changes for 2012, including MeSH® vocabulary updates, updated MeSH in MEDLINE citations, 454 new MeSH Headings, new concepts, changes to MeSH Headings, notable MeSH changes and related impact on searching, entry combination revisions, and additional changes to MEDLINE and OLDMEDLINE data, can be found here.^[29]

A "Revised Entry Combinations Table" for 2012 can be found here.^[30]

All 2012 updates to MeSH are listed here, including:^[31]

• 454 Descriptors added
• 42 Descriptor terms replaced with more up-to-date terminology
• 15 Descriptors deleted

November 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the NLM Technical Bulletin:^[32]

The National Library of Medicine® (NLM®) adopted the 2012 MeSH vocabulary for cataloging on November 21, 2011.

Accordingly, MeSH subject headings in LocatorPlus were changed to reflect the 2012 MeSH vocabulary and appear in that form as of November 21, 2011.

When year-end processing (YEP) activities are completed in mid-December, the NLM Catalog database and translation tables will be updated to reflect 2012 MeSH. Until then, note that there will be a hiatus in the addition of new and edited bibliographic records to the NLM Catalog.

The Index to the NLM Classification will not reflect 2012 MeSH changes until Spring 2012.

MeSH 2012 Changes in NLM Bibliographic Records

In general, the Cataloging Section implemented the vocabulary changes in NLM bibliographic records for books, serials, and other materials, as they were applied for citations in MEDLINE®. For highlights about 2012 MeSH, see the upcoming articles, What's New for 2012 MeSH and MEDLINE Data Changes - 2012.

• Medical Technology vs. Biomedical Technology: MeSH changed the specialty term Technology, Medical to Medical Laboratory Science to make it less ambiguous. In examining the cataloging records assigned the heading Technology, Medical, we determined that it was better to change the MeSH heading to Biomedical Technology, rather than Medical Laboratory Science because, in the majority of the cases, this is the heading that better reflects the topic of these works. About 400 records where Medical Laboratory Science is more appropriate have been identified programmatically and will be changed after YEP.

• Publication Types (PTs): Cataloging may now use the PT Addresses for modern cataloging. With 2012 MeSH, the restriction "CATALOG: Do not use for current materials " was removed from the annotation for this term.

• New MeSH descriptors not used by catalogers: Cataloging does not use MeSH terms that represent corporate names or uniform titles that reside in the national authority file. Therefore, HapMap Project has the annotation: CATALOG: use NAF entry. Catalogers should use the NAF heading: International HapMap Project.

More information on additional database changes and cataloging activities can be found in this press release.

October 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the NLM Technical Bulletin:^[33]

LJI (List of Journals Indexed for MEDLINE) Subject Headings will no longer be displayed in LocatorPlus® after November 18, 2011 and newly assigned LJI Subject Headings are not being added to LocatorPlus as of October 2011. The LJI Subject Heading is a MeSH® term assigned by the National Library of Medicine® (NLM®) to MEDLINE® journals to describe the journal’s overall scope. These currently appear in LocatorPlus records as Other Subjects in the Detailed View and as field 698 in the MARC View. The LJI Subject Headings selection in the Advanced Menu search will be removed. Serfile MARC records distributed to licensees will not contain 698 fields after November 18, 2011. These overall scope subject headings will continue to be assigned to indexed serials and may be viewed and searched in the NLM Catalog by qualifying the search term with [st] or using the Advanced search limit of Broad Subject Term. Alternatively, you can browse these broad subject terms and run an NLM Catalog search by clicking on Broad Subject Terms from the NLM Catalog homepage. The LJI Subject Heading appears in the Full display with the label: Broad Subject Term(s). However, the element "Broad Journal Heading" will no longer be populated for licensees as part of the XML data in CatfilePlus or Serfile. MeSH headings describing the specific scope of a journal will continue to be assigned and be searchable and viewable in both LocatorPlus and the NLM Catalog. In January 2012, a new MARC 999 value of WDN will display in LocatorPlus for titles that have been withdrawn from the NLM collection. This means that withdrawn records will be identifiable both from the Holdings display and in the bibliographic record.

September 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

The National Library of Medicine is working on a new interface for PubMed that includes semantic search features, and a prototype of Semantic MEDLINE is now available.^[34]

According to the NLM Technical Bulletin:^[35]

The Structured Abstracts resource page available from the National Library of Medicine® (NLM®) Web site has been updated. The main change is an updated list of structured abstract labels verified by NLM and the broader category mappings assigned by NLM. This updated list can be downloaded for free from this site which also provides NLM guidelines and other background information to assist licensees or researchers. The Updated Label List and NLM Category Mappings file contains 1,645 labels: 1,456 original labels (from the 2011 Label List) and 189 new labels. Each label has a corresponding broader NLM Category map, and an indication of whether the label is classed as an "Ending Label" concept. The only change to the original 1,456 label entries is the addition of a timestamp of "|20100629". The new 189 label entries have a timestamp of "|20110825". Other changes related to the release of the newly updated file of structured abstract labels include:

• Revision of all MEDLINE®, in process, and PubMed-not-MEDLINE citations in PubMed® that contain one or more of the 189 newly verified and mapped labels to reflect the new labels, effective late August 2011.
• Revision of all PubMed citations that are in "as supplied by publisher" status (publisher [sb]), effective September 12.

According to the NLM Technical Bulletin, the Introduction to MeSH 2012 is now available.^[36] The news release also states that "the default year in the MeSH Browser remains 2011 MeSH for now, but the alternate link provides access to 2012 MeSH."^[36] Finally, users can "download 2012 MeSH in XML and ASCII formats. Also available for 2012 from the same MeSH download page are":^[36]

• Pharmacologic Actions (Forthcoming)
• New Headings with Scope Notes
• MeSH Replaced Headings
• MeSH MN (tree number) changes
• 2012 MeSH in MARC format

According to the NLM Technical Bulletin:^[37]

The National Library of Medicine® (NLM®) is currently involved in MEDLINE year-end processing (YEP) activities. These include changing the Medical Subject Headings (MeSH®) and Substance Names on existing MEDLINE citations to conform with the 2012 version of MeSH, and other global changes.

• Important Dates
  • November 16, 2011: NLM expects to temporarily suspend the addition of fully-indexed MEDLINE citations to PubMed. Publisher-supplied and in process citations will continue to be added.
  • Mid-December 2011: PubMed MEDLINE citations, translation tables, and the MeSH database will have been updated to reflect 2012 MeSH.

For details about the impact on searching from November 16 to mid-December, see: Annual MEDLINE®/PubMed® Year-End Processing (YEP): Impact on Searching During Fall 2011.

August 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to an NLM Technical Bulletin:^[38]

Effective August 2011, eight new granting organizations from United Kingdom have been added for the Grant Number (GR) field in MEDLINE®/PubMed®:

• Action on Hearing Loss
• Breakthrough Breast Cancer
• The Dunhill Medical Trust
• Marie Curie Cancer Care
• Motor Neurone Disease Association
• Multiple Sclerosis Society
• Myrovlytis Trust
• Parkinson’s UK

Grant information for these new organizations is added to citations based only on information reported in the UK PubMed Central Submission System (UKPMC+). These organizations joined the UKPMC Funders group in July 2011.

More information on the PubMed display, searching details, and Publication Type (PT) searching can be found here.

April 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to the CAS website:^[39]

MEDLINE users can access full-text source material quicker, courtesy of Digital Object Identifier (DOI) information included, as available, in BIB and ALL displays. There is no additional charge for DOIs in these frequently used display formats. Also, content of the Chemical Name (CN) field has been streamlined for easier review. The field now covers just chemical names (including the names of chemical classes) and, as available, Enzyme Commission Numbers.

According to the NLM Technical Bulletin, "effective early April 2011, the name for an European granting organization recorded in MEDLINE®/PubMed® has been changed. 'Austrian Science Research Fund' has been changed to 'Austrian Science Fund FWF.' All PubMed citations affected were updated to reflect the new name."^[40]

March 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

MEDLINE is now available through PubMed® Mobile Beta, which "provides a simplified mobile friendly Web interface to access PubMed. PubMed Mobile includes the same basic search functionality and content as Standard PubMed; that is, all search terms and fields work similarly."^[41]

February 2011

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

MEDLINE has completed its annual overhaul of the Medical Subject Headings (MeSH) thesaurus and has introduced standardized Abstract Categories for records. The five standardized Abstract Categories are Background, Objective, Methods, Results, and Conclusions.^[42] A list of all updates to MEDLINE and MeSH for 2011 can be found at the NLM Technical Bulletin.

November 2010

This update has occurred since our last review. During our next scheduled update, this article will be revised to include a description of the newly added content and features.

According to STN International, users can now "search an additional 46,850 bibliographic records recently added to the MEDLINE backfile, extending its coverage to 1946."^[43]

November 2008

Every November and December MEDLINE suspends regular updating for several weeks to prepare for the implementation of next year's edition of the Medical Subject Headings (MeSH) thesaurus.^[44] A NLM bulletin details changes specific to the 2009 edition of MeSH terms.

Sources

1. ↑ "Reloaded MEDLINE on STN now includes 2013 MeSH Vocabulary and New Fields." STN International website, http://bit.ly/WwSRWk. Accessed January 30, 2013.
2. ↑ "MEDLINE reload update for ProQuest Dialog." Dialog website, http://www.dialog.com/pharma-biomed/201301/medline-reload/. Accessed January 10, 2013.
3. ↑ "December 2012 Dialog Chronolog." Dialog website, http://support.dialog.com/enewsletters/chronolog/201211/. Accessed December 5, 2012.
4. ↑ Changes to the Current 2013 MeSH Vocabulary. 2012 Nov-Dec;(389):b6. NLM Technical Bulletin, http://www.nlm.nih.gov/pubs/techbull/nd12/brief/nd12_mesh_changes.html. Accessed January 9, 2013.
5. ↑ Subject Terms for Indexed Journals Updated. NLM Tech Bull. 2012 Nov-Dec;(389):b5. NLM Technical Bulletin, http://www.nlm.nih.gov/pubs/techbull/nd12/brief/nd12_subject_terms.html. Accessed January 9, 2013.
6. ↑ Newly Maintained MEDLINE for 2013 MeSH Now Available in PubMed. NLM Tech Bull. 2012 Nov-Dec;(389):b4. NLM Technical Bulletin, http://www.nlm.nih.gov/pubs/techbull/nd12/brief/nd12_new_system.html. Accessed January 9, 2013.
7. ↑ Schulman J. What's New for 2013 MeSH. NLM Tech Bull. 2012 Nov-Dec;(389):e5. NLM Technical Bulletin, http://www.nlm.nih.gov/pubs/techbull/nd12/nd12_mesh.html. Accessed January 9, 2013.
8. ↑ Tybaert S. MEDLINE Data Changes — 2013. NLM Tech Bull. 2012 Nov-Dec;(389):e3a. NLM website, http://www.nlm.nih.gov/pubs/techbull/nd12/nd12_medline_data_changes_2013.html. Accessed December 5, 2012.
9. ↑ Reminder: Important MEDLINE/PubMed Year-End Processing Dates. NLM Tech Bull. 2012 Nov-Dec;(389):b1. NLM website, http://www.nlm.nih.gov/pubs/techbull/nd12/brief/nd12_yep_dates.html. Accessed December 5, 2012.
10. ↑ Schmidt S, Cox N. Author Replies to Comments to be Cited Separately in MEDLINE/PubMed. NLM Tech Bull. 2012 Sep-Oct;(388):e5. NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/so12/so12_author_replies.html. Accessed November 10, 2012.
11. ↑ Knecht LS, Ripple AM. "Structured Abstracts in MEDLINE: Newly Identified and Mapped Labels Available." NLM Tech Bull. 2012 Sep-Oct;(388):e3. NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/so12/so12_structured_abstracts.html. Accessed September 24, 2012.
12. ↑ "2013 Medical Subject Headings (MeSH) Now Available." NLM Tech Bull. 2012 Sep-Oct;(388):e2. NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/so12/so12_2013_mesh_avail.html. Accessed September 24, 2012.
13. ↑ Pash J. "A New System of Registry Number Identifiers for Chemicals in the MeSH Database." NLM Tech Bull. 2012 Jul-Aug;(387):e7. NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/ja12/ja12_fda_unii.html. Accessed September 24, 2012.
14. ↑ "Structured Abstracts: New PubMed Search Feature." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/ja12/brief/ja12_structured_abstracts.html. Accessed August 16, 2012.
15. ↑ "May 2012 Dialog Chronolog." Dialog website, http://support.dialog.com/enewsletters/chronolog/201205/. Accessed May 7, 2012.
16. ↑ "April 2012 Dialog Chronolog." Dialog website, http://support.dialog.com/enewsletters/chronolog/201204/. Accessed April 24, 2012.
17. ↑ "Two New Granting Organizations for MEDLINE/PubMed: Autism Speaks and PEPFAR." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/ma12/ma12_grants_autism_pepfar.html. Accessed April 24, 2012.
18. ↑ "Gain Access to the Most Sought-After Medical Journals." Email from Information Today. Received April 4, 2012.
19. ↑ "March 2012 Dialog Chronolog." Dialog website, http://support.dialog.com/enewsletters/chronolog/201203/. Accessed March 6, 2012.
20. ↑ "NLM Meeting Abstracts Collection Complete." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/ma12/brief/ma12_gateway_ma_collection.html. Accessed March 5, 2012.
21. ↑ "PubMed New and Noteworthy." PubMed RSS feed, http://www.ncbi.nlm.nih.gov/feed/rss.cgi?ChanKey=PubMedNews. Accessed February 28, 2012.
22. ↑ "Versioning in PubMed." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/jf12/jf12_pm_versioning.html. Accessed February 21, 2012.
23. ↑ "PubMed Subject Subset Strategies Updated for 2012." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/jf12/brief/jf12_pm_subsets.html. Access February 13, 2012.
24. ↑ "STNewsline February 2012." STN International website, http://www.stn-international.de/newsline022012.html. Accessed February 6, 2012.
25. ↑ Tybaert S. "Grant Number Information Updated." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/jf12/jf12_grant_number.html. Accessed January 9, 2012.
26. ↑ "Broad Subject Terms for Indexed Journals Updated." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/nd11/nd11_subject_terms.html. Accessed December 28, 2011.
27. ↑ "Newly Maintained MEDLINE for 2012 MeSH Now Available in PubMed." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/nd11/nd11_new_system.html. Accessed December 19, 2011.
28. ↑ "United Kingdom Funding Agency Arthritis Research Campaign Changes Its Name." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/nd11/nd11_grant_funding.html. Accessed December 12, 2011.
29. ↑ "MEDLINE Data Changes — 2012." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/nd11/nd11_medline_data_changes_2012.html. Accessed December 5, 2011.
30. ↑ "Revised Entry Combinations Table — 2012." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/nd11/nd11_entry_combo_table.html. Accessed December 5, 2011.
31. ↑ "What's New for 2012 MeSH®." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/nd11/nd11_mesh.html. Accessed December 5, 2011.
32. ↑ "Cataloging News — 2012." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/nd11/nd11_cataloging_news_2012.html. Accessed November 28, 2011.
33. ↑ "LocatorPlus Display Change." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/so11/so11_locatorplus.html. Accessed October 11, 2011.
34. ↑ Basset, H. "Semantic MEDLINE: the next PubMed?" Science Intelligence and InfoPros blog. Published September 24, 2011. http://scienceintelligence.wordpress.com/2011/09/24/semantic-medline-the-next-pubmed/. Accessed September 26, 2011.
35. ↑ "Structured Abstracts in MEDLINE Web Resource Page Updated." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/so11/so11_structured_abstracts.html. Accessed September 26, 2011.
36. ↑ ^{36.0 36.1 36.2} "2012 Medical Subject Headings (MeSH) Now Available." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/so11/so11_2012_mesh_avail.html. Accessed September 19, 2011.
37. ↑ "MEDLINE/PubMed Year-End Processing Activities." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/so11/so11_yep.html. Accessed September 12, 2011.
38. ↑ Kwan, Y. Kathy. "New United Kingdom Granting Organizations for MEDLINE/PubMed." NLM Technical Bulletin website, http://www.nlm.nih.gov/pubs/techbull/ja11/ja11_pm_grants.html. Accessed August 22, 2011.
39. ↑ "MEDLINE Improvements Provide Fast and Simple Access to DOI and Chemical Name Information." CAS website, http://www.cas.org/support/stngen/stnews/dbnews/apr2011.html#MEDLINE. Accessed May 31, 2011.
40. ↑ Kwan, Kathy. "European Granting Organization Agency Changes Name." NLM Technical Bulletin. April 8, 2011, http://www.nlm.nih.gov/pubs/techbull/ma11/ma11_austrian_name_change.html. Accessed May 2, 2011.
41. ↑ Canese, Kathi and Edward Welker. "PubMed Mobile Beta." March 17, 2011, http://www.nlm.nih.gov/pubs/techbull/ma11/ma11_pm_mobile_beta.html. Accessed May 2, 2011.
42. ↑ "Dialog Chronolog February 2011." Dialog website, http://support.dialog.com/enewsletters/chronolog/201102/. Accessed on February 02, 2011.
43. ↑ "Search an additional 46,850 records with MEDLINE backfile extension to 1946." STN International website, http://www.stn-international.de/stn_news_message_2010.html?&L=snhptruerneg&cHash=c8f66854df&tx_ttnews[tt_news]=1197&tx_ttnews[backPid]=6839. Accessed May 23, 2011.
44. ↑ "MEDLINE Fact Sheet." National Library of Medicine website, http://www.nlm.nih.gov/pubs/factsheets/medline.html. Accessed on January 16, 2009.