Comparison of a breath-actuated pressurized inhaler and a conventional pressurized inhaler.
D000336:Aerosols; D001986:Bronchial Spasm / Q000188:drug therapy; D006801:Humans; D007545:Isoproterenol / Q000008:administration & dosage*; D013147:Spirometry
D000336:Aerosols; D007545:Isoproterenol