Anemia, Iron-DeficiencyIronAnemia, HypochromicFerritinsAnemiaIron, DietaryErythrocyte IndicesHemoglobinsFerrous CompoundsPregnancy Complications, HematologicIron CompoundsHepcidinsReceptors, TransferrinProtoporphyrinsIron Carbonyl CompoundsTransferrinIron Chelating AgentsFerric CompoundsAnemia, RefractoryFood, FortifiedIron-Dextran ComplexIron IsotopesGlucaric AcidHemoglobinometryPicaEndoscopy, GastrointestinalNutritional StatusAntimicrobial Cationic PeptidesHematocritDietary SupplementsDeficiency DiseasesGastrointestinal HemorrhageHematinicsThrombocytosisPrevalenceHookworm InfectionsIron OverloadHemosiderosisBiological AvailabilityAnemia, AplasticAnemia, PerniciousPregnancyInfant FoodErythropoiesisInfant Nutritional Physiological PhenomenaAnemia, HemolyticCapsule EndoscopyErythropoietinTrace ElementsErythrocyte CountAncylostomiasisCeliac DiseaseFolic AcidMicronutrientsGastrointestinal DiseasesErythrocytesCote d'IvoireEnemaGastroscopyIron Metabolism DisordersBlood Cell CountFanconi AnemiaOccult BloodAnemia, MegaloblasticAncylostomabeta-ThalassemiaMenorrhagiaIndonesiaDietAdministration, OralAnemia, MacrocyticIodineTreatment OutcomeAnemia, Hemolytic, AutoimmuneIron RadioisotopesZincChronic DiseaseVitamin B 12 DeficiencyProspective StudiesIntestinal AbsorptionFolic Acid DeficiencyVitamin B 12Nevus, BlueEndoscopy, Digestive SystemAnemia, SideroblasticChild DevelopmentTanzaniaPregnancy ComplicationsNutritional RequirementsImmunoradiometric AssayDuodenumAnthropometryRisk FactorsBiological MarkersHelicobacter pyloriGastric Acidity DeterminationBlood TransfusionHelicobacter InfectionsReticulocytesAscorbic Acid