Anemia, Iron-DeficiencyIronAnemia, HypochromicFerritinsAnemiaIron, DietaryErythrocyte IndicesHemoglobinsFerrous CompoundsPregnancy Complications, HematologicIron CompoundsHepcidinsReceptors, TransferrinProtoporphyrinsIron Carbonyl CompoundsTransferrinIron Chelating AgentsFerric CompoundsFood, FortifiedIron-Dextran ComplexIron IsotopesGlucaric AcidHemoglobinometryPicaNutritional StatusEndoscopy, GastrointestinalAntimicrobial Cationic PeptidesHematocritDietary SupplementsDeficiency DiseasesAnemia, RefractoryGastrointestinal HemorrhageHematinicsThrombocytosisPrevalenceHookworm InfectionsIron OverloadHemosiderosisBiological AvailabilityAnemia, AplasticAnemia, PerniciousPregnancyInfant FoodInfant Nutritional Physiological PhenomenaErythropoiesisAnemia, HemolyticTrace ElementsErythropoietinErythrocyte CountCapsule EndoscopyAncylostomiasisFolic AcidCeliac DiseaseMicronutrientsGastrointestinal DiseasesCote d'IvoireErythrocytesEnemaGastroscopyIron Metabolism DisordersFanconi AnemiaBlood Cell CountOccult BloodAnemia, MegaloblasticAncylostomabeta-ThalassemiaMenorrhagiaIndonesiaDietAnemia, MacrocyticIodineIron RadioisotopesZincVitamin B 12 DeficiencyAdministration, OralIntestinal AbsorptionFolic Acid DeficiencyVitamin B 12Nevus, BlueAnemia, Hemolytic, AutoimmuneChronic DiseaseChild DevelopmentEndoscopy, Digestive SystemTanzaniaPregnancy ComplicationsProspective StudiesNutritional RequirementsImmunoradiometric AssayDuodenumAnthropometryHelicobacter pyloriGastric Acidity DeterminationBiological MarkersReticulocytesHelicobacter InfectionsRisk FactorsBlood TransfusionAscorbic AcidHemochromatosisAnemia, Sideroblastic