PubMed This link opens in a new windowPubMed was developed by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM). PubMed provides web access to bibliographic information, which is drawn primarily from MEDLINE, PreMEDLINE, HealthSTAR, as well as publisher-Supplied citations.To search for practice guidelines in PubMed, type the topic (such as a condition, symptom, or clinical procedure) in the search box. -customize the search by limit the result to "Guideline" or "Practice Guideline" under Article types.