The closing volume as a screening test in smokers.
D000328:Adult; D000367:Age Factors; D005105:Expiratory Reserve Volume; D005541:Forced Expiratory Volume; D006801:Humans; D008176:Lung Volume Measurements; D008297:Male; D008875:Middle Aged; D010313:Partial Pressure; D012119:Respiration; D012907:Smoking / Q000503:physiopathology*; D014797:Vital Capacity