Death, SuddenAutopsyDeath, Sudden, CardiacSudden Infant DeathCause of DeathCell DeathArrhythmias, CardiacCardiomyopathy, HypertrophicTachycardia, VentricularElectrocardiographyFatal OutcomeVentricular FibrillationDeathLong QT SyndromeRisk FactorsProne PositionForensic PathologyDefibrillators, ImplantableSyncopeElectrocardiography, AmbulatoryInfant, NewbornFollow-Up StudiesCoronary Vessel AnomaliesCardiomyopathiesAjmalineAnti-Arrhythmia AgentsRetrospective StudiesNAV1.5 Voltage-Gated Sodium ChannelTime FactorsArrhythmogenic Right Ventricular DysplasiaHeart Conduction SystemProspective StudiesHeart ArrestMyocardial InfarctionSportsBrugada SyndromeIncidenceKCNQ1 Potassium ChannelAsphyxiaHeart FailureFetal DeathCardiomyopathy, DilatedSyndromeHeart DiseasesCardiac Complexes, PrematureBundle-Branch BlockHeart BlockAmiodaroneMyocardiumPrognosisTachycardiaEther-A-Go-Go Potassium ChannelsRisk AssessmentBrain DeathSurvival AnalysisRiskBedsHeart RateInfant CareAge FactorsVentricular Premature ComplexesMutationTreatment OutcomeCoronary DiseaseEchocardiographyAttitude to DeathKCNQ Potassium ChannelsCoroners and Medical ExaminersMandatory TestingAutonomic Nervous SystemCohort StudiesPacifiersPedigreeTymoviridaeJapanTetralogy of FallotAthletesHeart VentriclesPotassium Channels, Voltage-GatedPredictive Value of TestsThoracic InjuriesMyocardial IschemiaAdrenergic beta-AntagonistsLown-Ganong-Levine SyndromeCardiac Pacing, ArtificialSurvival RateIsolated Noncompaction of the Ventricular MyocardiumVentricular DysfunctionPregnancyHeartStroke VolumeCardiomyopathy, RestrictiveSleepElectric CountershockParisInfant MortalityAutonomic Nervous System DiseasesCase-Control StudiesSodium ChannelsOregon