Beta2-agonists.
D000280:Administration, Inhalation; D000318:Adrenergic beta-Agonists; D001249:Asthma / Q000188:drug therapy*; D000075202:Contraindications; D005280:Fenoterol; D006801:Humans; D012107:Research Design; D013618:Tachyphylaxis
D000318:Adrenergic beta-Agonists; D005280:Fenoterol