The difficult chronic asthmatic.
D000280:Administration, Inhalation; D000318:Adrenergic beta-Agonists / Q000008:administration & dosage / Q000627:therapeutic use; D001249:Asthma / Q000175:diagnosis / Q000188:drug therapy*; D002908:Chronic Disease; D006801:Humans; D010349:Patient Compliance; D010353:Patient Education as Topic
D000318:Adrenergic beta-Agonists