title: [Incidence of chronic bronchitis in 16-and 18-year-old boys in Prague 7].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease; D003604:Czechoslovakia; D006801:Humans; D008297:Male; D012907:Smoking / Q000150:complications
vernacular_title: Výskyt vleklého zánĕtu průdusek u 16 a 18letých chlapců v Praze 7