Entrez PubMed, the U.S. National Library of Medicine's free online version of Medline, has a total of over 8.4 million indexed items with links to fulltext. Of these, more than 2.3 million link to free fulltext.
Does this mean that already more than a quarter of the world's medical literature is freely available online?
Here are the numbers, for May 13, 2008, as recorded on the Open Access Directory
2,349,343. May 13, 2008. Number of free fulltext articles on deposit at PubMed Central. To update this number, search PubMed with a limit to "Links to Free Full Text " from the Entrez PubMed search box.
8,413,363 May 13, 2008. Total number of articles in Entrez PubMed with "Links to Full Text".
