title: A CONTROLLED TRIAL OF THE EFFECT OF STEROIDS IN OBSTRUCTIVE AIRWAY DISEASE.
mesh_terms: D001249:Asthma; D001623:Betamethasone; D035843:Biomedical Research; D001991:Bronchitis; D003371:Cough; D004358:Drug Therapy; D006801:Humans; D010919:Placebos; D010991:Plethysmography; D011656:Pulmonary Emphysema; D012129:Respiratory Function Tests; D013183:Sputum
chemical_list: D010919:Placebos; D001623:Betamethasone
keywords: ASTHMA; BETAMETHASONE; BRONCHITIS; CLINICAL RESEARCH; COUGH; DRUG THERAPY; PLACEBOS; PLETHYSMOGRAPHY; PULMONARY EMPHYSEMA; RESPIRATORY FUNCTION TESTS; SPUTUM