PubMed Subject Filter Strategies Updated for 2014. NLM Tech Bull. 2014 Mar-Apr;(397):b1.
PubMed subject filter 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: