Role of bronchial obstruction in chronic lung disease.
D001945:Breathing Exercises; D001980:Bronchi; D002908:Chronic Disease; D003371:Cough; D006801:Humans; D008171:Lung Diseases / Q000150:complications*; D011656:Pulmonary Emphysema / Q000150:complications; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000175:diagnosis / Q000209:etiology*; D013147:Spirometry