TY - GEN AU - CHOW,B F AU - WOOD,R AU - HORONICK,A AU - OKUDA,K TI - Agewise variation of vitamin B12 serum levels SN - 0022-1422 PY - 2003///0501 KW - Aging KW - physiology KW - Blood KW - Humans KW - Vitamin B 12 KW - blood KW - Vitamin B Complex N1 - Publication Type: Journal Article UR - https://doi.org/10.1093/geronj/11.2.142 ER -