PT - JOURNAL ARTICLE AU - Edward B. Silberstein TI - Radioactivity Variations in Cobalt-57 Cyanocobalamin Capsules DP - 1990 Jan 01 TA - Journal of Nuclear Medicine PG - 128--128 VI - 31 IP - 1 4099 - http://jnm.snmjournals.org/content/31/1/128.short 4100 - http://jnm.snmjournals.org/content/31/1/128.full SO - J Nucl Med1990 Jan 01; 31