Vitamin DVitamin D DeficiencyVitamin AVitaminsCholecalciferolVitamin EVitamin B 12Receptors, CalcitriolVitamin A DeficiencyCalcifediolCalcitriolErgocalciferolsDietary SupplementsVitamin D-Binding ProteinVitamin K 1SunlightVitamin B 6Vitamin E DeficiencyRicketsVitamin B 12 Deficiency25-Hydroxyvitamin D3 1-alpha-HydroxylaseHydroxycholecalciferolsVitamin K DeficiencyParathyroid Hormone25-Hydroxyvitamin D 2Vitamin B 6 DeficiencyVitamin D Response ElementAscorbic AcidCalcium, DietaryDihydroxycholecalciferols24,25-Dihydroxyvitamin D 3Cholestanetriol 26-MonooxygenaseDietVitamin K 2CalciumOsteomalaciaPyridoxineSteroid HydroxylasesBone Density Conservation AgentsNutritional StatusBone and BonesSeasonsBone DensityAvitaminosisPhosphorusNutritional RequirementsVitamin B DeficiencyFood, FortifiedHypocalcemiaVitamin K 3Hyperparathyroidism, SecondaryAntioxidantsNutrition PolicyFolic AcidHypercalcemiaOsteoporosisRisk FactorsVitamin K Deficiency Bleedingalpha-TocopherolSkin Pigmentationbeta CaroteneDouble-Blind MethodOsteocalcinIntestinal AbsorptionCross-Sectional StudiesMineralsSodium-Coupled Vitamin C TransportersBiological MarkersDose-Response Relationship, DrugRetinoid X ReceptorsPrevalenceParathyroid GlandsTocopherolsCase-Control StudiesVitamin K Epoxide ReductasesHypophosphatemia, FamilialPregnancyHomocysteinePhosphatesTranscobalaminsProspective StudiesFractures, BoneDihydrotachysterolAlkaline PhosphataseHypoparathyroidismMethylmalonic AcidAdministration, OralDehydrocholesterolsMicronutrientsCarotenoidsCarbon-Carbon LigasesCalcium CarbonateLiverMaternal Nutritional Physiological PhenomenaRiboflavinNutrition SurveysReceptors, Retinoic AcidTime FactorsPyridoxal PhosphateS100 Calcium Binding Protein G