title: [Natural course of chronic bronchitis as a disease determined by environmental risk factors].
authors.forename: E
authors.initials: E
authors.lastname: Catena
mesh_terms: D001991:Bronchitis / Q000209:etiology / Q000503:physiopathology*; D002908:Chronic Disease; D004781:Environmental Exposure; D006801:Humans; D012307:Risk Factors
vernacular_title: Evoluzione naturale della bronchite cronica quale malattia determinata da fattori di rischio ambientali.