a high-performance liquid chromatographic method for simultaneous assay of 25-hydroxyvitamin d2 ( 25-oh-d2 ) and 25-hydroxyvitamin d3 ( 25-oh-d3 ) proposed in a previous paper ( 1 ) was applied to determine the plasma levels of the metabolites in perinatal and postnatal periods .
C0006657
25-hydroxyvitamin d3
C2713074
25-oh-d3