Vitamin B 12 DeficiencyVitamin B 6Vitamin AVitaminsVitamin DVitamin EVitamin B 12Infant, PrematureVitamin B ComplexVitamin A DeficiencyInfant, NewbornPyridoxineVitamin D DeficiencyTranscobalaminsVitamin B DeficiencyInfant, Premature, DiseasesInfant FoodInfant CareFolic AcidCobalt IsotopesVitamin K 1Vitamin E DeficiencyInfant FormulaInfant BehaviorDietary SupplementsVitamin K DeficiencyInfant MortalityAscorbic AcidVitamin B 6 DeficiencyInfant, Newborn, DiseasesSudden Infant DeathPyridoxal PhosphateInfant Nutritional Physiological PhenomenaCholecalciferolAnemia, PerniciousFolic Acid DeficiencyMethylmalonic AcidRiboflavinThiamineIntrinsic FactorInfant, Very Low Birth WeightInfant, Low Birth WeightPyridoxic AcidAnemia, MegaloblasticHydroxocobalaminAvitaminosisReceptors, CalcitriolPregnancyVitamin D-Binding ProteinMilk, HumanPyridoxalAnemia, MacrocyticBreast FeedingDietHyperhomocysteinemiaMalabsorption SyndromesNutritional StatusPyridoxal KinaseInfant WelfareVitamin K 2Schilling TestNutritional RequirementsCobamidesCalcifediolInfant, Extremely Low Birth WeightGestational AgeCalcitriolChild DevelopmentFood, FortifiedAntioxidantsCobalt RadioisotopesErgocalciferolsVitamin K Deficiency BleedingEuglenaPyridoxamineRisk FactorsRicketsBirth WeightInfant, Small for Gestational AgeVitamin K 3Infant, Extremely PrematureBottle FeedingBhutanPantothenic AcidMicronutrientsCorrinoidsbeta CaroteneProspective StudiesMethylenetetrahydrofolate Reductase (NADPH2)SunlightDouble-Blind MethodIntestinal AbsorptionTime Factorsalpha-TocopherolDiet, Vegetarian5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseIntensive Care Units, NeonatalMethionineXanthurenatesCrying