[Hematemesis, melena, with special reference to the massive hemorrhage of peptic ulcer].
D006396:Hematemesis; D006470:Hemorrhage; D006801:Humans; D008551:Melena; D010437:Peptic Ulcer; D010438:Peptic Ulcer Hemorrhage
HEMATEMESIS; MELENA; PEPTIC ULCER HEMORRHAGE