title: ICD 9: a regression.
mesh_terms: D002318:Cardiovascular Diseases / Q000145:classification; D003141:Communicable Diseases / Q000145:classification; D000013:Congenital Abnormalities / Q000145:classification; D004194:Disease / Q000145:classification*; D006801:Humans; D001523:Mental Disorders / Q000145:classification; D008659:Metabolic Diseases / Q000145:classification; D009026:Mortality; D009369:Neoplasms / Q000145:classification; D009422:Nervous System Diseases / Q000145:classification