[Problems of chronic bronchitis in the urban population].
D000328:Adult; D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease; D003604:Czechoslovakia; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000150:complications; D014505:Urban Population
Problematika vleklého zánĕtu průdusek u mĕstského obyvatelstva