title: Smoking and duodenal ulcer.
mesh_terms: D001570:Benzodiazepinones / Q000627:therapeutic use; D002927:Cimetidine / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000150:complications* / Q000188:drug therapy; D006801:Humans; D010879:Piperazines / Q000627:therapeutic use; D010890:Pirenzepine; D012907:Smoking / Q000150:complications*
chemical_list: D001570:Benzodiazepinones; D010879:Piperazines; D010890:Pirenzepine; D002927:Cimetidine