Thrombocythemia, EssentialPrimary MyelofibrosisPolycythemia VeraThrombocytosisJanus Kinase 2Myeloproliferative DisordersReceptors, ThrombopoietinPlatelet CountMegakaryocytesThrombosisCarbazilquinoneThrombopoietinHydroxyureaPipobromanSplenomegalyBone MarrowLeukocytosisMutation, MissenseGranulocytesMutationPolycythemiaThrombopoiesisErythrocyte InclusionsLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeBlood PlateletsAnemia, RefractoryAmino Acid SubstitutionCoagulantsThrombophiliaHematopoiesis, ExtramedullaryWorld Health OrganizationHemorrhageThrombocytopeniaPlatelet Aggregation InhibitorsHemangioma, CavernousGPI-Linked ProteinsReticulinPoint MutationHomozygoteIsoantigensReceptors, CytokineQuinazolinesDNA Mutational AnalysisHematopoietic Stem CellsOsteosclerosis