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Information about the journals indexed in MEDLINE, and available through PubMed, is found in the NLM Catalog. [ 7 ] As of 23 May 2023 [update] , PubMed has more than 35 million citations and abstracts dating back to 1966, selectively to the year 1865, and very selectively to 1809.
PubMed Central. PubMed Central (PMC) is a free digital repository that archives open access full-text scholarly articles that have been published in biomedical and life sciences journals. As one of the major research databases developed by the National Center for Biotechnology Information (NCBI), PubMed Central is more than a document repository.
The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is available.
Scopus is a scientific abstract and citation database, launched by the academic publisher Elsevier as a competitor to older Web of Science in 2004. [1] An ensuing competition between the two databases has been characterized as "intense" and is considered to significantly benefit their users in terms of continuous improvent in coverage, search/analysis capabilities, but not in price.
Online archive. The New England Journal of Medicine (NEJM) is a weekly medical journal published by the Massachusetts Medical Society. Founded in 1812, the journal is among the most prestigious peer-reviewed medical journals. [1] Its 2023 impact factor was 96.2, ranking it 2nd out of 168 journals in the category "Medicine, General & Internal".
The countries with the highest share of articles published in scientific journals according to the Nature Index 2024, which is valid for the calendar year 2023. [2] The "count" is the total number of articles to which nationals of the country have contributed.
MDPI (Multidisciplinary Digital Publishing Institute) is a publisher of open-access scientific journals.It publishes over 390 peer-reviewed, open access journals. [2] [3] MDPI is among the largest publishers in the world in terms of journal article output, [4] [5] and is the largest publisher of open access articles.
Medical Subject Headings (MeSH) is a comprehensive controlled vocabulary for the purpose of indexing journal articles and books in the life sciences. It serves as a thesaurus that facilitates searching. Created and updated by the United States National Library of Medicine (NLM), it is used by the MEDLINE / PubMed article database and by NLM's ...