Vitamin D DeficiencyVitamin DCalcifediolCholecalciferolSunlightVitaminsRicketsVitamin AReceptors, CalcitriolParathyroid HormoneDietary SupplementsErgocalciferolsHypocalcemia25-Hydroxyvitamin D 2OsteomalaciaCalcitriolVitamin EVitamin D-Binding ProteinVitamin A DeficiencyVitamin B 12Seasons25-Hydroxyvitamin D3 1-alpha-HydroxylasePrevalenceHydroxycholecalciferolsCalcium, DietarySkin PigmentationBone DensityCross-Sectional StudiesRisk FactorsBone Density Conservation AgentsCalciumBone and BonesVitamin B 12 DeficiencyPhosphorusVitamin E DeficiencyNutritional Status24,25-Dihydroxyvitamin D 3DietHyperparathyroidism, SecondaryGuadeloupeDihydroxycholecalciferolsVitamin K 1Alkaline PhosphataseOsteoporosisVitamin B 6Asymptomatic DiseasesHypophosphatemiaVitamin K DeficiencyCholestanetriol 26-MonooxygenaseJudaismVitamin B 6 DeficiencyBiological MarkersClothingAfrican AmericansSteroid HydroxylasesBone DiseasesProspective StudiesPhosphatesPregnancyBone Diseases, MetabolicQatarTurkeyNutrition PolicyInfant, NewbornParathyroid GlandsNutritional RequirementsAfrican Continental Ancestry GroupBaltimoreSeverity of Illness IndexAscorbic AcidCase-Control StudiesHyperparathyroidismEuropean Continental Ancestry GroupNutrition SurveysOsteocalcinVitamin D Response ElementMaternal Nutritional Physiological PhenomenaIranMusculoskeletal AbnormalitiesCohort StudiesAsiaFractures, BoneBreast FeedingBody Mass IndexLinear ModelsDeficiency DiseasesDehydrocholesterolsPregnancy ComplicationsMentally Ill PersonsEpidemiologic FactorsCardiovascular DiseasesRenal OsteodystrophyAmide SynthasesIndiaUltraviolet TherapyChronic DiseaseUnited StatesAge FactorsPseudohypoparathyroidismBone Development