NLM Classification Updated, February 12, 2021

The 2021 MeSH (Medical Subject Headings) vocabulary was evaluated for inclusion in the Classification index. Several additions and changes were made to the Index and Schedules based on this review. All main index headings are now linked to the 2021 vocabulary in the MeSH Browser. Additional minor updates were made to the Index and Schedules.
Source: NLM General Announcements - Category: Databases & Libraries Source Type: news