Spacing devices and metered-dose inhalers in childhood asthma.
Levison
H
H
Reilly
P A
PA
Worsley
G H
GH
D000318:Adrenergic beta-Agonists / Q000008:administration & dosage* / Q000627:therapeutic use; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000008:administration & dosage* / Q000627:therapeutic use; D002648:Child; D006801:Humans; D012138:Respiratory Therapy / Q000295:instrumentation* / Q000379:methods
D000318:Adrenergic beta-Agonists; D000336:Aerosols; D001993:Bronchodilator Agents