title: Combined use of theophylline and beta-2-agonists in asthma.
mesh_terms: D000284:Administration, Oral; D000318:Adrenergic beta-Agonists / Q000008:administration & dosage*; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D004359:Drug Therapy, Combination; D006801:Humans; D013806:Theophylline / Q000008:administration & dosage* / Q000097:blood
chemical_list: D000318:Adrenergic beta-Agonists; D000336:Aerosols; D013806:Theophylline