title: [Diagnosis of free perforation of gastroduodenal ulcer].
mesh_terms: D000006:Abdomen, Acute / Q000209:etiology; D000328:Adult; D000367:Age Factors; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography
vernacular_title: Die Diagnose der freien Perforation eines Gastroduodenalulkus.