CHRONIC OBSTRUCTIVE LUNG DISEASE. II. RELATIONSHIP OF CLINICAL AND PHYSIOLOGIC FINDINGS TO THE SEVERITY OF AIRWAYS OBSTRUCTION.
D004417:Dyspnea; D004562:Electrocardiography; D005471:Fluoroscopy; D006801:Humans; D008171:Lung Diseases; D029424:Pulmonary Disease, Chronic Obstructive; D013902:Radiography, Thoracic; D012129:Respiratory Function Tests
DYSPNEA; ELECTROCARDIOGRAPHY; FLUOROSCOPY; LUNG DISEASES; RESPIRATORY FUNCTION TESTS; THORACIC RADIOGRAPHY