Combined methylxanthines and beta-adrenergic agonists in the treatment of severe asthma.
D000318:Adrenergic beta-Agonists / Q000009:adverse effects / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D004359:Drug Therapy, Combination; D006801:Humans; D014970:Xanthines / Q000009:adverse effects / Q000627:therapeutic use*
D000318:Adrenergic beta-Agonists; D014970:Xanthines