title: [Epidemiology and etiology of chronic bronchitis].
authors.forename: N G
authors.initials: NG
authors.lastname: Karnaukh
authors.forename: V D
authors.initials: VD
authors.lastname: Krushevskiĭ
authors.forename: O N
authors.initials: ON
authors.lastname: Bednarik
authors.forename: S P
authors.initials: SP
authors.lastname: Lugovskoĭ
mesh_terms: D001991:Bronchitis / Q000453:epidemiology / Q000209:etiology; D002908:Chronic Disease; D004781:Environmental Exposure; D006801:Humans; D016273:Occupational Exposure; D012307:Risk Factors
vernacular_title: K voprosu ob épidemiologii i étiologii khronicheskogo bronkhita.