Venous ThrombosisThrombosisThrombophlebitisIntracranial ThrombosisSinus Thrombosis, IntracranialPhlebographyIliac VeinCerebral VeinsFemoral VeinAnticoagulantsPulmonary EmbolismThrombophiliaFactor VCoronary ThrombosisPopliteal VeinIntracranial Embolism and ThrombosisMesenteric VeinsHeparin, Low-Molecular-WeightCarotid Artery ThrombosisSagittal Sinus ThrombosisProtein S DeficiencyProtein C DeficiencyProthrombinUpper Extremity Deep Vein ThrombosisVena Cava, InferiorPostphlebitic SyndromeMesenteric Vascular OcclusionThromboembolismHeparinUltrasonography, Doppler, DuplexActivated Protein C ResistancePostthrombotic SyndromeVena Cava FiltersThrombectomyRisk FactorsFibrinolytic AgentsFibrin Fibrinogen Degradation ProductsVenous ThromboembolismJugular VeinsSubclavian VeinAntiphospholipid SyndromeBlood CoagulationCatheterization, PeripheralStockings, CompressionAxillary VeinLateral Sinus ThrombosisPortal VeinProtein CHemostasisThrombolytic TherapyWarfarinRenal VeinsTreatment OutcomeVeinsProtein SAntibodies, AntiphospholipidAntithrombin III DeficiencyLegRetrospective StudiesLupus Coagulation InhibitorBandagesFibrinolysisBudd-Chiari SyndromeCatheterization, Central VenousPuerperal DisordersFollow-Up StudiesAcenocoumarolCranial SinusesBlood Coagulation Disorders, InheritedPlethysmography, ImpedanceProspective StudiesRecurrenceBlood Coagulation TestsPartial Thromboplastin TimeAntibodies, AnticardiolipinEnoxaparinTime FactorsHemorrhageCase-Control StudiesFibrinogenUltrasonography, Doppler, ColorVenous InsufficiencyTomography, X-Ray ComputedBlood Coagulation DisordersNadroparinBleeding TimeIncidenceAntithrombinsMacedonia (Republic)Behcet SyndromePregnancy Complications, CardiovascularIntermittent Pneumatic Compression DevicesContraceptives, OralThromboplastinPlatelet Aggregation InhibitorsVenous ValvesAcute DiseaseCatheters, IndwellingUltrasonography, DopplerContraceptives, Oral, Hormonal