title: Schizophrenia: a multinational study. Characteristics of the study population.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003710:Demography; D004522:Educational Status; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage; D009790:Occupations; D012559:Schizophrenia / Q000453:epidemiology*; D012737:Sex Factors; D012923:Social Class