Content
In addition to MEDLINE, PubMed provides access to:
- older references from the print version of Index Medicus back to 1951 and earlier;
- references to some journals before they were indexed in Index Medicus and MEDLINE, for instance Science, BMJ, and Annals of Surgery;
- very recent entries to records for an article before it is indexed with Medical Subject Headings (MeSH) and added to MEDLINE; and
- a collection of books available full-text and other subsets of NLM records.
Many PubMed records contain links to full text articles, some of which are freely available, often in PubMed Central and local mirrors such as UK PubMed Central.
Information about the journals indexed in PubMed is found in the NLM Catalog.
As of 31 October 2012 (2012 -10-31), PubMed has over 22.2 million records going back to 1966, selectively to the year 1865, and very selectively to 1809; about 500,000 new records are added each year; 13.03 million of these articles are listed with their abstracts, and 14.13 million articles have links to full-text (of which 3.81 million articles are available full-text for free for any user). To see the current size of the database type "1800:2100" or "all" into the PubMed search window.
Read more about this topic: PubMed
Famous quotes containing the word content:
“Here form is content, content is form.”
—Samuel Beckett (1906–1989)
“The Republican convention, an event with the intellectual content of a Guns’n’Roses lyric attended by every ofay insurance broker in America who owns a pair of white shoes.”
—P.J. (Patrick Jake)
“I am content to live it all again,
And yet again, if it be life to pitch
Into the frog-spawn of a blind man’s ditch.”
—William Butler Yeats (1865–1939)