Vitamin B 12 DeficiencyVitamin B 6Vitamin AVitaminsVitamin DVitamin EVitamin B 12Vitamin B ComplexVitamin A DeficiencyPyridoxineVitamin D DeficiencyTranscobalaminsVitamin B DeficiencyFolic AcidCobalt IsotopesVitamin K 1Vitamin E DeficiencyDietary SupplementsVitamin K DeficiencyCholecalciferolAscorbic AcidPyridoxal PhosphateVitamin B 6 DeficiencyAnemia, PerniciousFolic Acid DeficiencyMethylmalonic AcidThiamineRiboflavinIntrinsic FactorReceptors, CalcitriolPyridoxic AcidAnemia, MegaloblasticHydroxocobalaminVitamin D-Binding ProteinCalcitriolAnemia, MacrocyticPyridoxalAvitaminosisPyridoxal KinaseHyperhomocysteinemiaMalabsorption SyndromesDietVitamin K 2CalcifediolSchilling TestCobamidesNutritional StatusAntioxidantsNutritional RequirementsCobalt RadioisotopesErgocalciferolsEuglenaPyridoxamineVitamin K 325-Hydroxyvitamin D3 1-alpha-HydroxylaseMolecular Sequence DataBhutanRicketsPantothenic AcidCorrinoidsVitamin K Deficiency Bleedingbeta CaroteneLiverMethylenetetrahydrofolate Reductase (NADPH2)Food, FortifiedMethionineSunlightAmino Acid Sequence5-Methyltetrahydrofolate-Homocysteine S-Methyltransferasealpha-TocopherolHydroxycholecalciferolsIntestinal AbsorptionDiet, VegetarianKineticsXanthurenatesMicronutrientsPyridoxaminephosphate OxidasePostgastrectomy SyndromesMethylmalonyl-CoA MutaseCystathionineEnzyme ActivationPropionibacteriumTetrahydrofolatesPicryl ChloridePregnancyBiological AssayTime FactorsDose-Response Relationship, DrugDihydroxycholecalciferolsVitamin K Epoxide ReductasesNitrogenous Group TransferasesEscherichia coliHomocysteineChromatography, High Pressure LiquidAdministration, OralTocopherolsRisk FactorsChromosomes, Human, 13-15Double-Blind Method25-Hydroxyvitamin D 2