Chronic psychiatric hospital patients.
D000328:Adult; D000368:Aged; D002908:Chronic Disease / Q000453:epidemiology; D003704:Dementia / Q000453:epidemiology; D005387:Finland; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology*; D008875:Middle Aged; D011618:Psychotic Disorders / Q000453:epidemiology; D012559:Schizophrenia / Q000453:epidemiology