title: Perforation of a duodenal ulcer during roentgen examination.
authors.forename: J A
authors.initials: JA
authors.lastname: SCHILLING
mesh_terms: D004381:Duodenal Ulcer; D004386:Duodenum / Q000000981:diagnostic imaging*; D006801:Humans; D010437:Peptic Ulcer; D011859:Radiography