title: Asthma deaths and theophylline/beta2-agonist therapy.
mesh_terms: D000318:Adrenergic beta-Agonists / Q000009:adverse effects*; D001249:Asthma / Q000401:mortality*; D004347:Drug Interactions; D006321:Heart / Q000187:drug effects; D006801:Humans; D013806:Theophylline / Q000009:adverse effects*
chemical_list: D000318:Adrenergic beta-Agonists; D013806:Theophylline