title: Perforated duodenal ulcer.
mesh_terms: D003131:Combined Modality Therapy; D004381:Duodenal Ulcer / Q000628:therapy*; D006635:Histamine H2 Antagonists / Q000627:therapeutic use; D006801:Humans; D010439:Peptic Ulcer Perforation / Q000628:therapy*; D012008:Recurrence
chemical_list: D006635:Histamine H2 Antagonists