Intestinal DiseasesImmunoproliferative Small Intestinal DiseaseAnemiaMaltaEnteritisMalabsorption SyndromesIntestinal Diseases, ParasiticDiverticulitisImmunoglobulin alpha-ChainsSprue, TropicalIntestinal MucosaAnemia, AplasticIntestine, SmallCrohn DiseaseCampylobacter InfectionsCommunicable DiseasesAnemia, HemolyticIntestinesDysenteryFecesFanconi AnemiaCeliac DiseaseInflammatory Bowel DiseasesIntestinal NeoplasmsGastrointestinal DiseasesAnemia, Hemolytic, AutoimmuneCaliciviridae InfectionsAnemia, HypochromicDiarrheaGastroenteritisNorovirusEnglandAnemia, MacrocyticAnemia, PerniciousCampylobacterEnterocolitis, NecrotizingWalesClostridium difficileIleumAnemia, Sickle CellColitis, UlcerativeIntestinal AbsorptionCampylobacter jejuniJejunumAnemia, SideroblasticColitisAnemia, MegaloblasticProbioticsInfectious Anemia Virus, EquineHemoglobinsAnemia, RefractoryColonAnemia, Hemolytic, CongenitalBiopsyEquine Infectious AnemiaErythropoietinInfant, NewbornIncidenceChicken anemia virusAnemia, Dyserythropoietic, CongenitalAnemia, Diamond-BlackfanCohort StudiesFanconi Anemia Complementation Group ProteinsDisease Models, AnimalIronPolymerase Chain ReactionPregnancy Complications, HematologicAnemia, NeonatalHematinicsAnemia, Refractory, with Excess of BlastsMice, Inbred C57BLFanconi Anemia Complementation Group C ProteinFanconi Anemia Complementation Group D2 ProteinHematocritFanconi Anemia Complementation Group A ProteinErythropoiesisAnemia, Hemolytic, Congenital NonspherocyticPallorErythrocyte CountFerritinsErythrocyte Indices