TY - JOUR T1 - Cobalamin deficiency in elderly patients JF - Canadian Medical Association Journal JO - CMAJ SP - 451 LP - 451 DO - 10.1503/cmaj.1041701 VL - 172 IS - 4 AU - Emmanuel Andrès Y1 - 2005/02/15 UR - http://www.cmaj.ca/content/172/4/451.1.abstract ER -