The chief cause of abrupt anemia. The neglected duodenal ulcer.
D000740:Anemia; D000747:Anemia, Hypochromic; D004381:Duodenal Ulcer; D006801:Humans; D010438:Peptic Ulcer Hemorrhage
ANEMIA, HYPOCHROMIC; DUODENAL ULCER; PEPTIC ULCER HEMORRHAGE