title: Cimetidine-resistant duodenal ulcers.
mesh_terms: D002927:Cimetidine / Q000627:therapeutic use*; D004351:Drug Resistance; D004381:Duodenal Ulcer / Q000188:drug therapy* / Q000628:therapy; D006801:Humans; D014628:Vagotomy
chemical_list: D002927:Cimetidine