title: A study of the long-term effect of therapy in chronic obstructive pulmonary disease.
mesh_terms: D000328:Adult; D000336:Aerosols; D000368:Aged; D000900:Anti-Bacterial Agents / Q000008:administration & dosage; D001784:Blood Gas Analysis; D001945:Breathing Exercises; D001991:Bronchitis / Q000188:drug therapy / Q000628:therapy*; D001993:Bronchodilator Agents / Q000008:administration & dosage; D003371:Cough; D004417:Dyspnea / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011175:Positive-Pressure Respiration; D011656:Pulmonary Emphysema / Q000188:drug therapy / Q000628:therapy*; D013147:Spirometry
chemical_list: D000336:Aerosols; D000900:Anti-Bacterial Agents; D001993:Bronchodilator Agents