Thrombocythemia, EssentialPolycythemia VeraThrombocytosisJanus Kinase 2Myeloproliferative DisordersPrimary MyelofibrosisReceptors, ThrombopoietinPlatelet CountThrombopoietinThrombosisCarbazilquinoneMegakaryocytesHydroxyureaPipobromanMutationEarly Detection of CancerMutation, MissenseLeukocytosisGranulocytesThrombopoiesisErythrocyte InclusionsSplenomegalyBlood PlateletsPolycythemiaAnemia, RefractoryAmino Acid SubstitutionThrombophiliaFollow-Up StudiesCoagulantsRetrospective StudiesPrognosisLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeBone MarrowQuinazolinesPregnancy Complications, HematologicHemorrhageGPI-Linked ProteinsProstatic NeoplasmsPlatelet Aggregation InhibitorsOvarian NeoplasmsWorld Health OrganizationDisease ProgressionBreast NeoplasmsThrombocytopeniaDNA Mutational AnalysisLung NeoplasmsStomach NeoplasmsColonic NeoplasmsRisk FactorsHemangioma, CavernousProto-Oncogene ProteinsReverse Transcriptase Polymerase Chain ReactionHomozygoteNeoplasm MetastasisNeoplasm InvasivenessReceptors, CytokinePoint MutationHeterozygoteAspirinPancreatic NeoplasmsIsoantigensNeoplasmsProspective StudiesRNA, Messenger