Original Article
A Method for Simultaneous Determination of 25-Hydroxyvitamin D3 and Its 3-Sulfate in Newborn Plasma by LC/ESI-MS/MS after Derivatization with a Proton-Affinitive Cookson-Type Reagent
Tatsuya Higashi, Mai Yokota, Ayaka Goto, Kenji Komatsu, Takahiro Sugiura, Shoujiro Ogawa, Mamoru Satoh, Fumio Nomura