PT - JOURNAL ARTICLE AU - J D Townsend AU - T Smith AU - M J Langman TI - Reproducibility of the hepatic uptake test of vitamin B12 absorption. AID - 10.1136/gut.9.2.199 DP - 1968 Apr 01 TA - Gut PG - 199--202 VI - 9 IP - 2 4099 - http://gut.bmj.com/content/9/2/199.short 4100 - http://gut.bmj.com/content/9/2/199.full SO - Gut1968 Apr 01; 9