[Diagnosis of duodenal ulcer. Endoscopic viewpoints].
D003951:Diagnostic Errors; D004381:Duodenal Ulcer / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004724:Endoscopy; D006801:Humans; D008722:Methods; D011859:Radiography
Diagnostik des Ulcus duodeni. Endoskopische Aspekte.