title: Theophylline usage in patients with acute asthma presenting to a central hospital.
mesh_terms: D000208:Acute Disease; D001249:Asthma / Q000188:drug therapy*; D004338:Drug Combinations; D004636:Emergency Service, Hospital; D004809:Ephedrine / Q000627:therapeutic use; D006801:Humans; D013806:Theophylline / Q000627:therapeutic use*; D015030:Zimbabwe
chemical_list: D004338:Drug Combinations; D013806:Theophylline; D004809:Ephedrine