Smoking habits, chronic bronchitis and ventilatory function in rural males.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000453:epidemiology*; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D010366:Peak Expiratory Flow Rate; D012424:Rural Population; D012907:Smoking / Q000453:epidemiology* / Q000503:physiopathology