The indication for endoscopy in acute gastrointestinal hemorrhage.
D000368:Aged; D004945:Esophagoscopy; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography