Betamethasone valerate aerosol in children not on previous  steroid therapy.
D000293:Adolescent; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D001623:Betamethasone / Q000031:analogs & derivatives*; D001624:Betamethasone Valerate / Q000627:therapeutic use; D002648:Child; D002986:Clinical Trials as Topic; D006801:Humans; D010919:Placebos
D000336:Aerosols; D010919:Placebos; D001623:Betamethasone; D001624:Betamethasone Valerate