title: [Errors in the diagnosis of perforated gastric and duodenal ulcers in the middle-afeg and elderly].
mesh_terms: D000368:Aged; D003951:Diagnostic Errors; D004381:Duodenal Ulcer / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000175:diagnosis*; D013276:Stomach Ulcer / Q000150:complications*
vernacular_title: Oshibki v diagnostike probodnoĭ iazvy zheludka i dvenadtsatiperstnoĭ kishki u lits pozhilogo i starcheskogo vozrasta.