Platelet TransfusionBlood TransfusionBlood PlateletsPlatelet CountThrombocytopeniaPlateletpheresisErythrocyte TransfusionPlatelet AggregationBlood Component TransfusionAntigens, Human PlateletThrombocytopenia, Neonatal AlloimmuneIsoantibodiesBlood Transfusion, IntrauterineBlood Transfusion, AutologousHemorrhageBlood Grouping and CrossmatchingPlatelet Membrane GlycoproteinsBlood PreservationPlatelet AdhesivenessExchange Transfusion, Whole BloodCell AggregationHematologyBlood Component RemovalBlood DonorsBlood Group IncompatibilityAnemia, AplasticBleeding TimePlatelet Factor 4ThrombopoietinFetofetal TransfusionPlatelet Function TestsAnemia, RefractoryHemostasisThrombastheniaBlood Loss, SurgicalPlatelet Activating FactorAdenosine DiphosphateThrombinLeukemiaHLA AntigensPlatelet Glycoprotein GPIIb-IIIa ComplexMegakaryocytesThrombopoiesisInterleukin-11LeukapheresisPancytopeniaHematopoietic Stem Cell TransplantationABO Blood-Group SystemThrombelastographyPlatelet Glycoprotein GPIb-IX ComplexTime FactorsPlatelet Aggregation InhibitorsNeonatologyTreatment OutcomePurpura, Thrombocytopenic, IdiopathicGranulocyte Colony-Stimulating FactorFibrinogenErythrocyte AggregationRetrospective StudiesHistocompatibility TestingBone Marrow TransplantationRecombinant ProteinsSplenectomyLeukocyte TransfusionTransplantation, AutologousBlood BanksLeukemia, MyeloidIsoantigensAcute DiseaseCyclophosphamideDisseminated Intravascular CoagulationThrombosisMyelodysplastic SyndromesThromboxane A2Prospective StudiesP-SelectinImmunizationAspirinBone Marrow DiseasesCollagenHemoglobinsLeukocyte CountInfant, NewbornAntibodiesAntineoplastic Combined Chemotherapy ProtocolsTransplantation, HomologousBlood CoagulationLymphoma, Non-HodgkinAntigens, CD34AnemiaLeukocytesAnemia, NeonatalLeukemia, Myeloid, AcuteEtoposideReceptors, Purinergic P2Y12Erythroblastosis, FetalSerotoninRistocetinPlatelet Membrane Glycoprotein IIbHematopoietic Stem Cell Mobilization