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Does PubMed Central contain the complete contents of all the journals that are in its archive?

April 26, 2017archive COMPLETE contain Contents Journals PubMed

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Does PubMed Central contain the complete contents of all the journals that are in its archive?

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No. Journals that deposit their articles in PMC fall into one of three categories: • For several hundred journals, PMC has the complete contents of each issue, starting with the first issue. For the older journals in this group, the back issues of a journal (generally, anything prior to the late 1990s) are available as digitized (scanned) copies of the original print journal. • For a smaller group of journals, PMC has complete issues and volumes for recent years, but not for all the early years of the journal. • For still other journals, PMC does not contain any complete issues, just a selection of articles, e.g., just those that are the result of NIH-funded research, or those that the journal has published as open access articles.