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<span>National Library of Medicine (NLM)</span>
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<p>Maintains the worlds largest medical library collection and coordinates PubMed, a database of millions of references to articles published in medical journals. Provides free online searching of the medical literature through <a href="http://www.medlineplus.gov/">MEDLINEPlus</a> and links to <a href="http://www.nlm.nih.gov/medlineplus/eyesandvision.html">health information topics on the eyes and vision</a>. Provides a <a href="http://www.nlm.nih.gov/medlineplus/druginformation.html">drug information guide</a> to more than 9,000 prescription and over-the-counter medications. Maintains a <a href="http://clinicaltrials.gov/">clinical trials database</a> for patients, family members, and members of the public.</p>
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