Death, SuddenAutopsyDeath, Sudden, CardiacCause of DeathSudden Infant DeathCell DeathArrhythmias, CardiacCardiomyopathy, HypertrophicTachycardia, VentricularFatal OutcomeElectrocardiographyVentricular FibrillationDeathLong QT SyndromeForensic PathologyDefibrillators, ImplantableRisk FactorsSyncopeElectrocardiography, AmbulatoryFollow-Up StudiesCoronary Vessel AnomaliesCardiomyopathiesAjmalineAnti-Arrhythmia AgentsRetrospective StudiesArrhythmogenic Right Ventricular DysplasiaTime FactorsHeart Conduction SystemHeart ArrestNAV1.5 Voltage-Gated Sodium ChannelProspective StudiesMyocardial InfarctionSportsInfant, NewbornKCNQ1 Potassium ChannelHeart FailureBrugada SyndromeFetal DeathIncidenceCardiomyopathy, DilatedSyndromeHeart DiseasesCardiac Complexes, PrematureBundle-Branch BlockHeart BlockAmiodaroneMyocardiumPrognosisTachycardiaEther-A-Go-Go Potassium ChannelsBrain DeathRisk AssessmentSurvival AnalysisRiskVentricular Premature ComplexesHeart RateTreatment OutcomeCoronary DiseaseEchocardiographyAge FactorsAttitude to DeathKCNQ Potassium ChannelsCoroners and Medical ExaminersMandatory TestingAsphyxiaPedigreeTymoviridaeJapanTetralogy of FallotAthletesMutationCohort StudiesHeart VentriclesPotassium Channels, Voltage-GatedPredictive Value of TestsThoracic InjuriesMyocardial IschemiaAdrenergic beta-AntagonistsLown-Ganong-Levine SyndromeCardiac Pacing, ArtificialSurvival RateAutonomic Nervous SystemIsolated Noncompaction of the Ventricular MyocardiumVentricular DysfunctionHeartStroke VolumeCardiomyopathy, RestrictiveElectric CountershockParisAutonomic Nervous System DiseasesNecrosisAtrioventricular NodeMortalityHypertrophy, Left VentricularJervell-Lange Nielsen SyndromeCardiomegalyMyocarditisPacemaker, ArtificialCoronary VesselsProne Position