title: Early detection of expiratory airflow reduction in chronic nonspecific lung disease.
mesh_terms: D000328:Adult; D002908:Chronic Disease; D006801:Humans; D008171:Lung Diseases / Q000503:physiopathology*; D008297:Male; D012123:Pulmonary Ventilation; D012907:Smoking; D014692:Ventilation-Perfusion Ratio; D014797:Vital Capacity