Extensive listing of medical journals articles compiled by the U.S. government.
PubMed is an index of life sciences and biomedical research developed and supported by the U.S. National Institutes of Health. The core of the PubMed collection is MEDLINE. It lists 30 million sources from 1809 to the present (only selected sources prior to 1966) with robust search functions including a thesaurus of works and phrases that represent subjects in the medical field. A strength is its extensiveness and selectivity of medical research, while a weakness is its limited options for full text. Free.