title: Perforation of chronic peptic ulcers after cimetidine.
mesh_terms: D000328:Adult; D002927:Cimetidine / Q000009:adverse effects* / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000150:complications* / Q000188:drug therapy; D005260:Female; D006146:Guanidines / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000209:etiology*; D013276:Stomach Ulcer / Q000150:complications* / Q000188:drug therapy
chemical_list: D006146:Guanidines; D002927:Cimetidine