Upper gastrointestinal haemorrhage. Diagnostic traps.
D000368:Aged; D001018:Aortic Diseases / Q000175:diagnosis; D004378:Duodenal Diseases / Q000175:diagnosis; D005402:Fistula / Q000175:diagnosis; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D007412:Intestinal Fistula / Q000175:diagnosis; D008297:Male; D008551:Melena / Q000175:diagnosis; D008875:Middle Aged