The role of air pollution, smoking and respiratory illnesses in childhood in the development of chronic bronchitis.
D000293:Adolescent; D000397:Air Pollution; D001991:Bronchitis / Q000209:etiology*; D002908:Chronic Disease; D005541:Forced Expiratory Volume; D006801:Humans; D012140:Respiratory Tract Diseases / Q000150:complications* / Q000175:diagnosis; D012907:Smoking / Q000150:complications*; D013147:Spirometry; D014797:Vital Capacity