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What is the connection between PubMed Central (PMC) and PubMed?

April 26, 2017connection pmc PubMed

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What is the connection between PubMed Central (PMC) and PubMed?

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PubMed is a database of citations and abstracts for millions of articles from thousands of journals. It includes links to full-text articles at several thousand journal web sites as well as to most of the articles in PubMed Central. PubMed Central (PMC) is an electronic archive of full-text journal articles, offering free access to its contents. PMC contains more than 1.5 million articles, most of which have a corresponding entry in PubMed. PubMed does not have citations for certain types of PMC material, such as book reviews, that are considered out of scope for PubMed. These items constitute a small portion of the total PMC collection and there are no plans to include them in PubMed. In addition, articles published prior to 1966 (and added to PMC via the Back Issue Digitization project) may be in PMC for several months before appearing in PubMed. Citations and links for these pre-1966 articles are added to PubMed one journal at a time, after all the back issues for that journal have

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Posted

PubMed is a database of citations and abstracts for millions of articles from thousands of journals. It includes links to full-text articles at several thousand journal web sites as well as to most of the articles in PubMed Central. PubMed Central (PMC) is an electronic archive of full-text journal articles, offering free access to its contents. PMC contains nearly 2 million articles, most of which have a corresponding entry in PubMed. PubMed does not have citations for certain types of PMC material, such as book reviews, that are considered out of scope for PubMed. These items constitute a small portion of the total PMC collection and there are no plans to include them in PubMed. In addition, articles added to PMC via the Back Issue Digitization project) may be in PMC for several months before equivalent citations appear in PubMed. Citations and links for these articles are added to PubMed one journal at a time, after all the back issues for that journal have been added to PMC.