Malabsorption in pernicious anemia.
D000752:Anemia, Pernicious / Q000150:complications* / Q000175:diagnosis; D006471:Gastrointestinal Hemorrhage / Q000150:complications; D006801:Humans; D007501:Iron / Q000378:metabolism*; D008286:Malabsorption Syndromes / Q000209:etiology*
D007501:Iron