title: Bronchial lability and its relationship to pulmonary function decline in young asymptomatic smokers and nonsmokers.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001980:Bronchi / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D005082:Physical Exertion; D012129:Respiratory Function Tests; D012907:Smoking