title: Contribution to the study of perforated gastro-duodenal ulcers.
authors.forename: L F C
authors.initials: LF
authors.lastname: DE ANDRADE
mesh_terms: D006801:Humans; D010437:Peptic Ulcer
keywords: PEPTIC ULCER/perforated
vernacular_title: Contribuição ao estudo das ulceras gastro-duodenais perfuradas.