1. Observations on the etiologic relationship of achylia gastrica to pernicious anemia. X. activity of vitamin B12 as food (extrinsic) factor;Berk;N Engl J Med,1948
2. Observations on the etiologic relationship of achylia gastrica to pernicious anemia. XIII. Hematopoietic activity of (vitamin B12);Schilling;Blood,1951
3. Absorption of vitamin B12 in pernicious anemia;Ungley;BMJ,1950
4. Oral administration of vitamin B12 in pernicious anemia. I. Presence of intrinsic factor in Berkefeld-filtered pooled human gastric juice: Preliminary report, Proc Staff Meet;Hall;Mayo Clin,1949
5. Observations on the etiologic relationship of achylia gastrica to pernicious anemia. XV. Hematopoietic effects of simultaneous intravenous and of simultaneous or serial oral administration of intrinsic factor in vitamin B12;Wallerstein;J Lab Clin Med,1953