PT - JOURNAL ARTICLE AU - R. D. M. MacLeod TI - Vitamin deficiency in the elderly DP - 1971 Aug 01 TA - The Journal of the Royal College of General Practitioners PG - 496--497 VI - 21 IP - 109 4099 - http://bjgp.org/content/21/109/496.4.short 4100 - http://bjgp.org/content/21/109/496.4.full SO - J R Coll Gen Pract1971 Aug 01; 21