%0 Journal Article %A Joseph B. Workman %A Edward Rusche %T Cobalt-57 Labeled Vitamin B-12 Plasma Levels for the Differential Diagnosis of Macrocytic Anemias %D 1966 %J Journal of Nuclear Medicine %P 583-588 %V 7 %N 8 %U https://jnm.snmjournals.org/content/jnumed/7/8/583.full.pdf