Double-blind comparative trial of two metered bronchodilator aerosols.
D000328:Adult; D000336:Aerosols; D000368:Aged; D001249:Asthma / Q000188:drug therapy; D001982:Bronchial Diseases / Q000188:drug therapy*; D001991:Bronchitis / Q000188:drug therapy; D001993:Bronchodilator Agents / Q000008:administration & dosage*; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D007545:Isoproterenol / Q000008:administration & dosage; D008297:Male; D009921:Metaproterenol / Q000008:administration & dosage; D008875:Middle Aged
D000336:Aerosols; D001993:Bronchodilator Agents; D009921:Metaproterenol; D007545:Isoproterenol