title: The significance of pneumoperitoneum in perforated gastroduodenal ulcer.
authors.forename: C L
authors.initials: CL
authors.lastname: WALTON
mesh_terms: D000005:Abdomen; D006801:Humans; D007274:Injections, Intraperitoneal; D007327:Insufflation; D010439:Peptic Ulcer Perforation; D011027:Pneumoperitoneum
keywords: PEPTIC ULCER/perforation; PNEUMOPERITONEUM