Death, SuddenAutopsyDeath, Sudden, CardiacCause of DeathSudden Infant DeathCell DeathArrhythmias, CardiacCardiomyopathy, HypertrophicTachycardia, VentricularFatal OutcomeElectrocardiographyDeathVentricular FibrillationLong QT SyndromeForensic PathologyRisk FactorsDefibrillators, ImplantableSyncopeElectrocardiography, AmbulatoryFollow-Up StudiesTime FactorsCoronary Vessel AnomaliesCardiomyopathiesRetrospective StudiesAnti-Arrhythmia AgentsAjmalineProspective StudiesArrhythmogenic Right Ventricular DysplasiaInfant, NewbornHeart Conduction SystemHeart ArrestMyocardial InfarctionNAV1.5 Voltage-Gated Sodium ChannelSportsIncidenceHeart FailureKCNQ1 Potassium ChannelSyndromeHeart DiseasesFetal DeathBrugada SyndromeCardiomyopathy, DilatedPrognosisCardiac Complexes, PrematureBundle-Branch BlockHeart BlockMyocardiumAmiodaroneRisk AssessmentTreatment OutcomeTachycardiaSurvival AnalysisEther-A-Go-Go Potassium ChannelsRiskBrain DeathAge FactorsHeart RateMutationCohort StudiesVentricular Premature ComplexesCoronary DiseaseEchocardiographyPredictive Value of TestsPedigreeJapanAttitude to DeathCoroners and Medical ExaminersAsphyxiaKCNQ Potassium ChannelsMandatory TestingHeart VentriclesSurvival RateAthletesMyocardial IschemiaTetralogy of FallotTymoviridaePotassium Channels, Voltage-GatedAdrenergic beta-AntagonistsThoracic InjuriesCardiac Pacing, ArtificialLown-Ganong-Levine SyndromeAutonomic Nervous SystemHeartDisease Models, AnimalPhenotypeVentricular DysfunctionIsolated Noncompaction of the Ventricular MyocardiumStroke VolumePregnancyBrainNecrosisCardiomyopathy, RestrictiveCase-Control StudiesParisElectric CountershockAutonomic Nervous System DiseasesMortalityAtrioventricular NodeUnited StatesHypertrophy, Left Ventricular