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PubMed is a free search engine that accesses the MEDLINE database, an online collection of scientific papers relating to life sciences and biomedical topics. PubMed was released to the public in 1996.[1]

How to Run a Search in PubMed

PubMed is an ideal way to find technical, scientific articles that will qualify as professional sourcing for medical claims. To run a search in PubMed:

  1. Go to the advanced search feature.
  2. If seeking secondary sources, set Publication Type to 'review.'
  3. If you'd prefer recent articles within the past 5 years, set Date-Publication accordingly.
  4. Simply enter search terms you are looking for as 'All Fields' although you can restrict the search to 'Title', 'Text Word', or 'Text/Abstract' if you wish.

PubMed Identifier

A PMID or PubMed Identifier is a unique number assigned, for purposes of categorization, to a PubMed paper.[2] PMIDs differ from PMCIDs, since PMCIDs are assigned to all papers in PubMed Central, not just those on PubMed.[3]


  1. PubMed Celebrates its 10th Anniversary. Technical Bulletin. United States National Library of Medicine (2006-10-05). Retrieved on 2011-03-22.
  2. Search Field Descriptions and Tags. National Center for Biotechnology Information. Retrieved on 15 July 2013.
  3. Keener, Molly (19 May 2008). PMID vs. PMCID: What's the difference?. University of Chicago. Retrieved on 19 January 2014.