title: Acute perforated peptic ulcer; a survey of 50 cases.
authors.forename: P L
authors.initials: PL
authors.lastname: SHALLENBERGER
authors.forename: T R
authors.initials: TR
authors.lastname: BROOKS
authors.forename: R C
authors.initials: RC
authors.lastname: HELM
mesh_terms: D000208:Acute Disease; D003625:Data Collection; D006801:Humans; D010437:Peptic Ulcer; D010439:Peptic Ulcer Perforation