[Smoking as a risk factor in chronic bronchitis].
D000041:Absenteeism; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000397:Air Pollution; D001991:Bronchitis / Q000453:epidemiology / Q000209:etiology / Q000401:mortality; D002908:Chronic Disease; D002980:Climate; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009790:Occupations; D012383:Romania; D012737:Sex Factors; D012907:Smoking / Q000150:complications*; D012959:Socioeconomic Factors
Fumatul ca factor de risc în bronşita cronică.