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:
- Complementary Medicine
- Dietary Supplements
- Veterinary Science
A new subject filter was added this year for Developmental and Reproductive Toxicology (DART). This filter was created to facilitate searching for subjects in the area of teratology and other aspects of developmental and reproductive toxicology.