Vitamin B 12 DeficiencyVitamin B 6SyndromeVitamin AVitaminsVitamin DVitamin EVitamin A DeficiencyVitamin B 12Vitamin B ComplexVitamin D DeficiencyPyridoxineVitamin B DeficiencyTranscobalaminsFolic AcidVitamin E DeficiencyCobalt IsotopesVitamin K 1Folic Acid DeficiencyVitamin B 6 DeficiencyVitamin K DeficiencyDietary SupplementsDown SyndromeMetabolic Syndrome XAscorbic AcidAnemia, PerniciousMethylmalonic AcidThiamineCholecalciferolPyridoxal PhosphateRiboflavinIntrinsic FactorDeficiency DiseasesAnemia, MegaloblasticAnemia, MacrocyticHydroxocobalaminMalabsorption SyndromesDietPyridoxic AcidNephrotic SyndromeAvitaminosisThiamine DeficiencyReceptors, CalcitriolVitamin D-Binding ProteinSjogren's SyndromePyridoxalHyperhomocysteinemiaalpha 1-Antitrypsin DeficiencyNutritional StatusMutationPyridoxal KinaseVitamin K 2Schilling TestTurner SyndromeCobamidesNutritional RequirementsCalcitriolPregnancyAbnormalities, MultipleCalcifediolRisk FactorsImmunologic Deficiency SyndromesLiverIgA DeficiencyAnemia, Iron-DeficiencyAntioxidantsMice, KnockoutMyelodysplastic SyndromesPhenotypeCobalt RadioisotopesInfant, NewbornVitamin K Deficiency BleedingErgocalciferolsCushing SyndromeRiboflavin DeficiencyPedigreeIronRicketsFood, FortifiedGlucosephosphate Dehydrogenase DeficiencyEuglenaCase-Control StudiesTime FactorsPolycystic Ovary SyndromePyridoxamineAcute Coronary SyndromeVitamin K 3Metabolism, Inborn ErrorsBhutanMolecular Sequence DataWilliams SyndromeMagnesium DeficiencySunlightBiological MarkersPantothenic AcidMethylenetetrahydrofolate Reductase (NADPH2)MethionineDiGeorge Syndromebeta CaroteneMicronutrients