%0 Journal Article %T Simultaneous assay for vitamin B12 and folate compared with separate assay. %A Whigham, W, R %A Sudarsanan,, L %J Clinical Chemistry %V 23 %N 9 %P 1778-1779 %@ 0009-9147 %D 1977-09-01 %I American Association of Clinical Chemistry %~ DeepDyve