PubMed is a literature database, access
is free and unrestricted.
PubMed is a service of the National
Library of Medicine, provides access to over 11 million MEDLINE
citations back to the mid-1960's and additional life science journals.
PubMed includes links to many sites providing full text articles and
other related resources.
PubMed
Central (PMC) is
a digital archive of life sciences journal literature managed by
the National Center for Biotechnology Information (NCBI) at the U.S.
National Library of Medicine (NLM). Access to PMC is free and
unrestricted.
