Anemia, MacrocyticErythrocyte IndicesAnemiaErythrocytes, AbnormalErythrocyte VolumeVitamin B 12 DeficiencyAnemia, PerniciousVitamin B 12FIGLU TestErythrocyte CountFolic Acid DeficiencyMegaloblastsFolic AcidAnemia, AplasticHematologic DiseasesHemoglobinsAnemia, HemolyticErythropoiesisBenzenesulfonatesFanconi AnemiaAnemia, Hemolytic, AutoimmuneAnemia, HypochromicNiacinamidePhenylurea CompoundsAnemia, Sickle CellAnemia, SideroblasticAnemia, MegaloblasticInfectious Anemia Virus, EquineAnemia, RefractoryAnemia, Hemolytic, CongenitalEquine Infectious AnemiaErythropoietinChicken anemia virusAnemia, Dyserythropoietic, CongenitalAnemia, Diamond-BlackfanFanconi Anemia Complementation Group ProteinsIronPregnancy Complications, HematologicAnemia, NeonatalHematinicsAnemia, Refractory, with Excess of BlastsFanconi Anemia Complementation Group C ProteinFanconi Anemia Complementation Group D2 ProteinHematocritFanconi Anemia Complementation Group A ProteinAnemia, Hemolytic, Congenital NonspherocyticPallorFerritinsHemoglobinometryBlood Transfusion