Asthma: an up-to-date look at an old problem.
D000208:Acute Disease; D000293:Adolescent; D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D000318:Adrenergic beta-Agonists / Q000627:therapeutic use; D001249:Asthma / Q000175:diagnosis / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D014970:Xanthines / Q000627:therapeutic use
D000305:Adrenal Cortex Hormones; D000318:Adrenergic beta-Agonists; D014970:Xanthines