Vitamin B 12 DeficiencyVitamin B 6Vitamin AVitaminsDietary SupplementsVitamin EVitamin DVitamin B ComplexVitamin B 12Vitamin A DeficiencyPyridoxineVitamin D DeficiencyFolic AcidVitamin B DeficiencyTranscobalaminsVitamin K 1Vitamin E DeficiencyAscorbic AcidCobalt IsotopesCholecalciferolFood, FortifiedDietVitamin K DeficiencyVitamin B 6 DeficiencyDouble-Blind MethodRiboflavinFolic Acid DeficiencyPyridoxal PhosphateThiamineMethylmalonic AcidAntioxidantsAnemia, PerniciousNutritional StatusAnimal FeedAvitaminosisIntrinsic Factorbeta CaroteneMicronutrientsHyperhomocysteinemiaalpha-TocopherolHydroxocobalaminAnemia, MegaloblasticNutritional RequirementsPyridoxic AcidReceptors, CalcitriolVitamin D-Binding ProteinPyridoxalZincAnemia, MacrocyticPregnancyCalcifediolRandom AllocationMalabsorption SyndromesSeleniumVitamin K 2Administration, OralAnimal Nutritional Physiological PhenomenaPyridoxal KinasePlacebosCalcium, DietaryCalcitriolBody WeightErgocalciferolsIronSchilling TestTocopherolsCobamidesHomocysteineTrace ElementsMethionineMaternal Nutritional Physiological PhenomenaAnemia, Iron-DeficiencyLiverFish OilsCarotenoidsMineralsDietary ProteinsDose-Response Relationship, DrugCobalt RadioisotopesPyridoxamineFatty Acids, Omega-3RicketsMethylenetetrahydrofolate Reductase (NADPH2)Oxidative StressDocosahexaenoic AcidsPantothenic AcidIntestinal AbsorptionTime FactorsSunlightMilk, HumanEuglenaLactationVitamin K 3DigestionInfant, NewbornPrenatal Nutritional Physiological PhenomenaBhutanIron, DietaryLipid Peroxidation5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase