Vitamin K DeficiencyVitamin KVitamin K 1Vitamin K 2Vitamin AVitamin B 12Vitamin DVitamin K Deficiency BleedingVitaminsVitamin EVitamin K 3Vitamin B 12 DeficiencyVitamin A DeficiencyVitamin D DeficiencyVitamin K Epoxide ReductasesVitamin E DeficiencyVitamin D-Binding ProteinFolic AcidCalcifediolMethylmalonic AcidDietary SupplementsAscorbic AcidVitamin B 6SerumCarbon-Carbon LigasesNutritional StatusCholecalciferolAvitaminosisHomocysteineTranscobalaminsFolic Acid DeficiencyXerophthalmiaWarfarinAnemia, MacrocyticDietAnemia, PerniciousSunlight4-HydroxycoumarinsReceptors, CalcitriolVitamin B 6 DeficiencyFood, FortifiedDiet, Vegetarianbeta CaroteneBiological MarkersK562 CellsVitamin B DeficiencyVitamin B ComplexOsteocalcinSerum AlbuminProthrombin TimeAntifibrinolytic AgentsErgocalciferolsProthrombinCarotenoidsCalcitriolNutrition SurveysMixed Function OxygenasesAntioxidantsParathyroid HormoneNutritional RequirementsIntrinsic FactorAnticoagulants25-Hydroxyvitamin D3 1-alpha-HydroxylaseCase-Control StudiesRisk FactorsMicronutrientsInternational Normalized RatioCobalt IsotopesCalcium, DietaryHypoprothrombinemiasAnemia, MegaloblasticBone DensityMalabsorption SyndromesTime FactorsPyridoxineLiverCross-Sectional StudiesChromatography, High Pressure LiquidReference Values1-Carboxyglutamic AcidSeasonsRetinol-Binding ProteinsPregnancyNight BlindnessRodenticidesAdministration, OralInfant, NewbornPhenprocoumonProspective StudiesInjections, IntramuscularDigestive System DiseasesCalciumIntestinal AbsorptionNutritional Physiological PhenomenaCholesterolDouble-Blind MethodSeleniumAbsorptionAscorbic Acid Deficiency