Long-term beta2 bronchodilator therapy and the question of tolerance.
D000318:Adrenergic beta-Agonists / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy* / Q000503:physiopathology; D002986:Clinical Trials as Topic; D004809:Ephedrine / Q000627:therapeutic use; D005280:Fenoterol / Q000627:therapeutic use; D005541:Forced Expiratory Volume; D006801:Humans; D013726:Terbutaline / Q000627:therapeutic use
D000318:Adrenergic beta-Agonists; D005280:Fenoterol; D004809:Ephedrine; D013726:Terbutaline