1. Failed Schilling tests;Chanarin;Scand J Haematol,1974
2. Dietary fibre;Cummings;Gut,1973
3. Simultaneous measurements of free and intrinsic factor (IF) bound vitamin B12(B12) absorption: Absolute quantitation with incomplete stool collection and rapid relative measurement using plasma B12 (IF):BI2absorption ratio;Fish;J Nucl Med,1973
4. Double-tracer technique for estimation of vitamin B12 absorption;Ganatra;J Nucl Med,1971
5. Determination of absorption of vitamin B12 by a double isotope tracer technique;Ganatra;J Nucl Med,1965