title: [Interest of prevalence studies for etiological purposes in the field of chronic bronchitis in coalminers (author's transl)].
mesh_terms: D001991:Bronchitis / Q000175:diagnosis / Q000453:epidemiology*; D002908:Chronic Disease; D003032:Coal Mining; D003371:Cough / Q000209:etiology; D004417:Dyspnea / Q000209:etiology; D004812:Epidemiologic Methods; D006801:Humans; D008297:Male; D008669:Metallurgy; D009784:Occupational Diseases / Q000453:epidemiology*; D012123:Pulmonary Ventilation; D012111:Residence Characteristics; D012907:Smoking / Q000150:complications
vernacular_title: Intérêt des méthodes de recherche de prévalence de symptômes. Application á l'étude des facteurs étiologiques de la bronchite chronique chez des houilleurs.