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The National Library of Medicine (NLM) Gateway is the starting point for accurate trustworthy medical information:Fact Sheet about the NLM Gateway


NLM Gateway: http://gateway.nlm.nih.gov
 
Gateway is "One-stop shopping" for an increasing number of the information resources of the National Library of Medicine (NLM).  It’s targeted for the Internet user who comes to NLM not knowing exactly what is here, or how best to search for it.  A single interface that searches in multiple retrieval systems, Gateway provides a single address, look, and feel.
 
Gateway Characteristics
 
The user enters one query that is sent automatically to multiple retrieval systems having different characteristics but potentially useful results.  Results from the target systems are presented in categories (journal article citations; books, serials, and audiovisuals; consumer health information; meeting abstracts; other collections) rather than by database. In some categories, multiple collections are searched.
 
We expect that users will come to Gateway for an overview scan of NLM's resources. Some will find what they need immediately.  Others may find that one resource, such as PubMed® or MedlinePlus®, has information they would like to know more about. They may then choose to go straight to that resource for a more focused search. http://www.nlm.nih.gov/pubs/factsheets/medline.html