title: [Problems of methodology in ecologic surveys in psychiatry].
mesh_terms: D004463:Ecology; D004782:Environmental Health; D004812:Epidemiologic Methods; D005602:France; D005843:Geography; D006778:Hospitals, Psychiatric; D006798:Housing; D006801:Humans; D008433:Mathematics; D001523:Mental Disorders / Q000453:epidemiology*; D011570:Psychiatry; D012423:Rural Health; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D014505:Urban Population
vernacular_title: Problèmes de méthodologie dans la recherche écologique en psychiatrie.