title: Selective cobalamin (vitamin B12) malabsorption in adolescence. A case report.
abstract: Selective cobalamin (vitamin B12) malabsorption has been well described as a familial phenomenon, but severe pancytopenia in adolescence as a result of this defect has not previously been documented.
authors: Department of Medicine, University of the Witwatersrand, Johannesburg.
authors: C
authors: C
authors: Smith
mesh_terms: D000293:Adolescent; D006801:Humans; D007408:Intestinal Absorption; D008286:Malabsorption Syndromes / Q000235:genetics*; D008297:Male; D010198:Pancytopenia / Q000209:etiology*; D014805:Vitamin B 12 / Q000493:pharmacokinetics*
chemical_list: D014805:Vitamin B 12