Venous InsufficiencyVaricose VeinsVaricose UlcerUltrasonography, Doppler, DuplexSaphenous VeinPhlebographyUterine Cervical IncompetenceVenous ValvesVelopharyngeal InsufficiencyFemoral VeinPopliteal VeinMethalliburePlethysmographyAortic Valve InsufficiencyVeinsPalatal ObturatorsLegVenous PressurePostthrombotic SyndromeVascular Surgical ProceduresAmnesia, Transient GlobalSclerosing SolutionsUltrasonography, Doppler, ColorSclerotherapyPelvic Girdle PainHeart AuscultationMitral Valve InsufficiencyLeg UlcerSick Sinus SyndromeCerclage, CervicalMitral ValveChronic DiseaseExercise TestLower ExtremityRegional Blood FlowHeart RateHeart Valve ProsthesisPelvisLigationStockings, CompressionLaser TherapyJugular VeinsValsalva ManeuverAortic ValveEndoscopyRecurrencePulmonary ValveUltrasonography, DopplerSeverity of Illness IndexExercise ToleranceTreatment OutcomeIliac VeinProspective StudiesHeart Valve DiseasesFollow-Up Studies