Anemia, Iron-DeficiencyAnemiaAnemia, HypochromicIronErythrocyte IndicesFerritinsHemoglobinsIron, DietaryPregnancy Complications, HematologicFerrous CompoundsAnemia, AplasticAnemia, HemolyticIron Carbonyl CompoundsIron CompoundsHepcidinsAnemia, PerniciousProtoporphyrinsReceptors, TransferrinFanconi AnemiaAnemia, RefractoryAnemia, MegaloblasticAnemia, Hemolytic, AutoimmuneFerric CompoundsIron-Dextran ComplexEndoscopy, GastrointestinalHemoglobinometryFood, FortifiedDeficiency DiseasesAnemia, MacrocyticPicaGlucaric AcidNutritional StatusTransferrinHematocritVitamin B 12 DeficiencyHematinicsDietary SupplementsGastrointestinal HemorrhageFolic Acid DeficiencyAntimicrobial Cationic PeptidesThrombocytosisPrevalenceAnemia, Sickle CellErythropoietinAnemia, SideroblasticErythropoiesisHemosiderosisHookworm InfectionsIron IsotopesPlummer-Vinson SyndromeErythrocyte CountPregnancyErythrocytesCapsule EndoscopyBiological AvailabilityFolic AcidVitamin A DeficiencyInfectious Anemia Virus, EquineInfant Nutritional Physiological PhenomenaInfant FoodGastrointestinal DiseasesCeliac DiseaseTrace ElementsVitamin B 12AncylostomiasisGastroscopyEnemaAnemia, Hemolytic, Congenitalalpha 1-Antitrypsin DeficiencyBlood Cell CountIodineOccult BloodCote d'IvoireMicronutrientsIndonesiaAncylostomaDietMenorrhagiabeta-ThalassemiaZincBlood TransfusionVitamin D DeficiencyEquine Infectious AnemiaChronic DiseaseAdministration, OralNevus, BlueProspective StudiesGlucosephosphate Dehydrogenase DeficiencyAnemia, Dyserythropoietic, CongenitalPregnancy ComplicationsTanzaniaChicken anemia virusEndoscopy, Digestive SystemRisk FactorsIgA DeficiencyAnemia, Diamond-BlackfanThiamine DeficiencyImmunoradiometric AssayInfant, NewbornReticulocytes