PT - JOURNAL ARTICLE AU - S. Peter Wetterberg TI - Cobalamin deficiency in elderly patients AID - 10.1503/cmaj.1041367 DP - 2005 Feb 15 TA - Canadian Medical Association Journal PG - 450--450 VI - 172 IP - 4 4099 - http://www.cmaj.ca/content/172/4/450.1.short 4100 - http://www.cmaj.ca/content/172/4/450.1.full SO - CMAJ2005 Feb 15; 172