input: [Database] Medline on OvidSP [Details] 
output: Produced by the US National Library of Medicine, Medline on OvidSP 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. Data available goes back to 1966 and the database is updated weekly.