MEDLINE - Ovid This link opens in a new windowCompiled by the U.S. National Library of Medicine (NLM), MEDLINE is the world's most comprehensive source of life sciences and biomedical bibliographic information. It contains nearly eleven million records from over 7,300 different publications from 1965 to present. Subjects covered include all aspects of clinical medicine (diseases and disorders, diagnostic and therapeutic techniques and equipment), basic biomedical sciences (anatomy, physiology, biochemistry, genetics, microbiology, pharmacology, etc.), the health care system (facilities, manpower, services, administration), dentistry, nursing, and clinical psychology. MEDLINE may be used to find information on diagnosis, etiology, therapy, and prevention of diseases and disorders; on research in basic science fields relating to medicine; and on biomedical technology and its applications.