Vitamin D DeficiencyVitamin DVitamin AVitaminsVitamin ECalcifediolCholecalciferolSunlightRicketsAscorbic AcidReceptors, CalcitriolParathyroid HormoneDietDietary SupplementsErgocalciferolsHypocalcemia25-Hydroxyvitamin D 2OsteomalaciaCalcitriolVitamin D-Binding ProteinVitamin A DeficiencyVitamin B 12Seasons25-Hydroxyvitamin D3 1-alpha-HydroxylasePrevalenceHydroxycholecalciferolsCalcium, DietarySkin PigmentationBone DensityCross-Sectional StudiesBone Density Conservation AgentsRisk FactorsCalciumBone and BonesVitamin B 12 DeficiencyPhosphorusVitamin E Deficiency24,25-Dihydroxyvitamin D 3Nutritional StatusHyperparathyroidism, SecondaryGuadeloupeDihydroxycholecalciferolsVitamin K 1Alkaline PhosphataseOsteoporosisVitamin B 6Asymptomatic DiseasesHypophosphatemiaVitamin K DeficiencyVitamin B 6 DeficiencyCholestanetriol 26-MonooxygenaseJudaismClothingBiological MarkersAfrican AmericansSteroid HydroxylasesBone DiseasesProspective StudiesPhosphatesBone Diseases, MetabolicQatarPregnancyTurkeyNutrition PolicyParathyroid GlandsInfant, NewbornNutritional RequirementsAfrican Continental Ancestry GroupBaltimoreHyperparathyroidismVitamin D Response ElementOsteocalcinNutrition SurveysSeverity of Illness IndexEuropean Continental Ancestry GroupCase-Control StudiesMusculoskeletal AbnormalitiesMaternal Nutritional Physiological PhenomenaIranCohort StudiesFractures, BoneAsiaBreast FeedingDeficiency DiseasesBody Mass IndexDehydrocholesterolsLinear ModelsMentally Ill PersonsPregnancy ComplicationsEpidemiologic FactorsCardiovascular DiseasesRenal OsteodystrophyAmide SynthasesIndiaUltraviolet TherapyPseudohypoparathyroidismPhosphorus, DietaryBone DevelopmentChronic DiseaseSaudi Arabia