Originated in 1998; National Library of Medicine's selective list of authoritative health information sources from the National Institutes of Health and other government and professional organizations in the U.S. Updated nightly, it has over 4,000 articles on various diseases, symptoms, drugs and procedures, as well as interactive health tutorials, research news, local resources, directories of hospitals and physicians, clinical trials and links to MEDLINE for journal citations.

free access via PubMed http://www.ncbi.nlm.nih.gov/sites/entrez?otool=wiuwiblib

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