Prospective evaluation of protein bound vitamin B12 (cobalamin) malabsorption in the elderly using trout flesh labelled in vivo with 57 Co-cobalamin. - Aimone-Gastin,I.; Pierson,H.; Jeandel,C.; Bronowicki,J.P.; Plenat,F.; Lambert,D.; Nabet-Belleville,F.; Gueant,J.L. (Gut, 1997)