title: Cimetidine versus ranitidine for refractory Zollinger-Ellison syndrome.
mesh_terms: D001570:Benzodiazepinones / Q000627:therapeutic use; D002927:Cimetidine / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D010890:Pirenzepine; D011899:Ranitidine / Q000627:therapeutic use*; D015043:Zollinger-Ellison Syndrome / Q000188:drug therapy*
chemical_list: D001570:Benzodiazepinones; D010890:Pirenzepine; D002927:Cimetidine; D011899:Ranitidine