title: Appraisal of postural drainage for chronic obstructive pulmonary disease.
mesh_terms: D001249:Asthma / Q000628:therapy; D001991:Bronchitis / Q000628:therapy; D002908:Chronic Disease; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000628:therapy*; D011187:Posture; D011656:Pulmonary Emphysema / Q000628:therapy; D013147:Spirometry; D013183:Sputum