Platelet CountThrombosisBlood PlateletsPlatelet AggregationVenous ThrombosisThrombocytopeniaPlatelet AdhesivenessPlatelet TransfusionPlatelet Membrane GlycoproteinsThrombocytosisCoronary ThrombosisPlatelet Factor 4Blood Cell CountSinus Thrombosis, IntracranialPlatelet Function TestsPurpura, Thrombocytopenic, IdiopathicLeukocyte CountBleeding TimeCarotid Artery ThrombosisPlatelet Glycoprotein GPIIb-IIIa ComplexIntracranial ThrombosisPlatelet Glycoprotein GPIb-IX ComplexMegakaryocytesHemostasisPlatelet Activating FactorFibrinogenThrombinBlood CoagulationThrombopoietinAnticoagulantsPurpura, ThrombocytopenicAntigens, Human PlateletSplenectomyHemorrhageThrombopoiesisHeparinAdenosine DiphosphateP-SelectinDisseminated Intravascular CoagulationThrombocythemia, Essentialvon Willebrand FactorTime FactorsTreatment OutcomeBlood Coagulation DisordersAspirinBlood Coagulation TestsErythrocyte CountProthrombin TimeCD4 Lymphocyte CountSagittal Sinus ThrombosisPartial Thromboplastin TimePhlebographyIntracranial Embolism and ThrombosisThrombophiliaRetrospective StudiesFibrin Fibrinogen Degradation ProductsFibrinolytic AgentsBlood Coagulation FactorsPlatelet Membrane Glycoprotein IIbPlatelet ActivationProspective StudiesReceptors, ThrombopoietinHELLP SyndromeRisk FactorsHypersplenismFactor VPregnancy Complications, HematologicHematocritFemoral VeinThromboembolismIliac VeinHematologic TestsPlatelet Aggregation InhibitorsFibrinolysisHeparin, Low-Molecular-WeightThromboxane A2Cell CountUpper Extremity Deep Vein ThrombosisPortal VeinProthrombinFollow-Up StudiesFibrinHematologyCollagenPlateletpheresisReceptors, Purinergic P2Y12Antiphospholipid SyndromePipecolic AcidsCerebral VeinsThrombelastographyPlatelet Factor 3ThromboplastinSerotoninPlatelet-Rich PlasmaRecombinant ProteinsPlatelet Storage Pool DeficiencyRistocetinStentsPolycythemia VeraAcute Disease