OVID MEDLINE This link opens in a new windowOvid MEDLINE covers the international literature on biomedicine, including the allied health fields and the biological and physical sciences, humanities, and information science as they relate to medicine and health care. Information is indexed from approximately 5,600 journals published world-wide. Records start in the early 1800's and go all the way to our daily updates. Ovid MEDLINE is produced by the National Library of Medicine.