title: Improved chromatographic determination of 25-hydroxyvitamins D2 and D3.
mesh_terms: D015652:25-Hydroxyvitamin D 2; D002112:Calcifediol / Q000097:blood*; D002851:Chromatography, High Pressure Liquid; D004872:Ergocalciferols / Q000031:analogs & derivatives* / Q000097:blood; D006801:Humans; D013048:Specimen Handling
chemical_list: D004872:Ergocalciferols; D015652:25-Hydroxyvitamin D 2; D002112:Calcifediol