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PubMed is a free interface for searching MEDLINE, the most popular bibliographic database in the health and medical sciences. It contains references to millions of journal articles from biomedical journals and is updated daily.

Online help

A user guide is available from the PubMed homepage and to the right of the search box after you have run a search. Online training is also available. 

link to user guide

Further help

For further help, please contact us at our Ask Us page.