title: Perforation of peptic ulcer after withdrawal of cimetidine.
mesh_terms: D000368:Aged; D002927:Cimetidine / Q000009:adverse effects*; D004381:Duodenal Ulcer / Q000150:complications; D006146:Guanidines / Q000009:adverse effects*; D006801:Humans; D008297:Male; D010439:Peptic Ulcer Perforation / Q000209:etiology*
chemical_list: D006146:Guanidines; D002927:Cimetidine