Anemia, Iron-DeficiencyIronAnemia, HypochromicFerrous CompoundsIron, DietaryFerritinsHemoglobinsAnemiaErythrocyte IndicesFerric CompoundsIron Chelating AgentsFood, FortifiedIron CompoundsFlourPregnancy Complications, HematologicHepcidinsReceptors, TransferrinBiological AvailabilityDietary SupplementsProtoporphyrinsTransferrinIron Carbonyl CompoundsIron IsotopesIron OverloadIron-Dextran ComplexGlucaric AcidHemoglobinometryAntimicrobial Cationic PeptidesNutritional StatusPicaHematocritEndoscopy, GastrointestinalDeficiency DiseasesAnemia, RefractoryHematinicsGastrointestinal HemorrhageThrombocytosisPrevalenceHemosiderosisIron RadioisotopesHookworm InfectionsIron Metabolism DisordersErythropoiesisInfant FoodPregnancyAnemia, AplasticAnemia, PerniciousInfant Nutritional Physiological PhenomenaTrace ElementsErythropoietinAnemia, HemolyticErythrocyte CountCapsule EndoscopyAncylostomiasisFolic AcidMicronutrientsCeliac DiseaseErythrocytesGastrointestinal DiseasesCote d'IvoireEnemaGastroscopybeta-ThalassemiaBlood Cell CountFanconi AnemiaOccult BloodAnemia, MegaloblasticAncylostomaIndonesiaZincMenorrhagiaIntestinal AbsorptionHemochromatosisAnemia, MacrocyticDietIodineAdministration, OralVitamin B 12 DeficiencyFolic Acid DeficiencyVitamin B 12Nevus, BlueAnemia, Hemolytic, AutoimmuneDuodenumIron Regulatory Protein 1Chronic DiseaseNutritional RequirementsChild DevelopmentPregnancy ComplicationsProspective StudiesTanzaniaEndoscopy, Digestive SystemImmunoradiometric AssayIron Regulatory Protein 2Ascorbic AcidAnthropometryBlood TransfusionReticulocytesBiological MarkersRisk FactorsHelicobacter pylori