Evaluation of small airways dysfunction in asymptomatic cigarette smokers: comparison of six tests.
D000328:Adult; D000402:Airway Obstruction / Q000209:etiology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008451:Maximal Voluntary Ventilation; D008875:Middle Aged; D012123:Pulmonary Ventilation; D012907:Smoking / Q000150:complications*