Epidemiology of psychiatric disorders as a contribution to medical ecology. Use of admission statistics in Norway.
D004463:Ecology; D004812:Epidemiologic Methods; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology*; D009664:Norway; D011618:Psychotic Disorders / Q000453:epidemiology*