Analysis of the transcobalamin II 776C > G (259P > R) single nucleotide polymorphism by denaturing HPLC in healthy elderly: associations with cobalamin, homocysteine and holo-transcobalamin II - Wans,S.; Schuttler,K.; Jakubiczka,S.; Muller,A.; Luley,C.; Dierkes,J. (Clin Chem Lab Med, 2003)