PubMed comprises more than 28 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites. PubMed is maintained by U.S. National Institutes of Health's National Library of Medicine (NIH/NLM) and is freely accessible to all Web users.
International coverage of journal articles, selected web sites, and patents in the sciences, social sciences, and humanities; provides citation tracking for 1996+ (select coverage for earlier periods) and cited reference searches back to 1970.
