title: [Errors in the diagnosis of perforated gastroduodenal ulcer].
authors.forename: E I
authors.initials: EI
authors.lastname: Ushakova
mesh_terms: D000328:Adult; D000368:Aged; D003951:Diagnostic Errors; D004381:Duodenal Ulcer / Q000150:complications*; D006801:Humans; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage / Q000175:diagnosis*; D010439:Peptic Ulcer Perforation / Q000175:diagnosis*; D013276:Stomach Ulcer / Q000150:complications*
vernacular_title: Oshibki v diagnostike probodnykh gastroduodenal'nykh iazv.