"MEDLINE provides authoritative medical information on medicine, nursing, dentistry, veterinary medicine, the health care system, pre-clinical sciences, and much more. Created by the National Library of Medicine, MEDLINE uses (MeSH) indexing with tree numbers, tree hierarchy, and explosion capabilities to search abstracts from over 4,000 current biomedical journals. Included are citations from Index Medicus, the International Nursing Index, Index to Dental Literature, PREMEDLINE, AIDSLINE, BIOETHICSLINE and HealthSTAR. ." (source EBSCOhost)