Anemia, RefractoryAnemia, SideroblasticThrombocytosisMyelodysplastic SyndromesAnemia, Refractory, with Excess of BlastsRibonucleoprotein, U2 Small NuclearFerrocyanidesGranulocyte Precursor CellsPreleukemiaJanus Kinase 2ErythroblastsThrombocythemia, EssentialErythrocytes, Abnormal5-Aminolevulinate SynthetaseBone MarrowWorld Health OrganizationPlatelet CountMutationBone Marrow CellsErythrocytes