title: Theophylline, beta-agonists, and fatal asthma.
mesh_terms: D000293:Adolescent; D000318:Adrenergic beta-Agonists / Q000009:adverse effects*; D000328:Adult; D001249:Asthma / Q000188:drug therapy / Q000401:mortality*; D004347:Drug Interactions; D006801:Humans; D008875:Middle Aged; D013806:Theophylline / Q000009:adverse effects*
chemical_list: D000318:Adrenergic beta-Agonists; D013806:Theophylline