title: Deficiency of vitamin B12 after extensive resection of the distal small intestine in an infant.
mesh_terms: D000740:Anemia; D000747:Anemia, Hypochromic; D002648:Child; D006801:Humans; D007223:Infant; D007421:Intestine, Small / Q000601:surgery*; D007422:Intestines; D014805:Vitamin B 12; D014806:Vitamin B 12 Deficiency
chemical_list: D014805:Vitamin B 12
keywords: ANEMIA, HYPOCHROMIC/in infancy and childhood; INTESTINE, SMALL/surgery; VITAMIN B 12 DEFICIENCY/in infancy and childhood