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National Estimates of Serum Total 25-Hydroxyvitamin D and Metabolite Concentrations Measured by Liquid Chromatography–Tandem Mass Spectrometry in the US Population during 2007–2010

NutritionNutrient BioavailabilityDietary ExposureMedicineUs PopulationMass SpectrometryMetabolomic ProfilingAnalytical ChemistryNutritional ScienceClinical ChemistryNational EstimatesPharmacologyMetabolite Concentrations Measured