It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Learn about the difference between PubMed and MEDLINE, how to run a basic PubMed search, how to assess your search results, where to find search details, how to customize PubMed with My NCBI, and different ways to search for a known citation. We also briefly introduce Medical subject headings (MeSH), automatic term mapping, search tags and subheadings.
MedlinePlus is an online health information resource for patients and their families and friends. It is a service of the National Library of Medicine (NLM), the world's largest medical library, and a part of the National Institutes of Health (NIH).