Death, SuddenAutopsyDeath, Sudden, CardiacArrhythmias, CardiacCause of DeathTachycardia, VentricularSudden Infant DeathElectrocardiographyVentricular FibrillationDefibrillators, ImplantableCell DeathElectrocardiography, AmbulatorySyncopeLong QT SyndromeAnti-Arrhythmia AgentsCardiomyopathy, HypertrophicBrugada SyndromeNAV1.5 Voltage-Gated Sodium ChannelHeart Conduction SystemRisk FactorsFollow-Up StudiesFatal OutcomeDeathVentricular Premature ComplexesMyocardial InfarctionCircadian RhythmArrhythmogenic Right Ventricular DysplasiaForensic PathologyCardiac Complexes, PrematureElectrophysiologic Techniques, CardiacTachycardiaHeart ArrestCardiomyopathiesProspective StudiesTime FactorsCardiomyopathy, DilatedPredictive Value of TestsHeart RateRisk AssessmentBundle-Branch BlockAmiodaroneRetrospective StudiesKCNQ1 Potassium ChannelHeart FailureCardiac Pacing, ArtificialElectric CountershockPrognosisCoronary Vessel AnomaliesStroke VolumeAjmalineFlecainideTorsades de PointesHeart VentriclesSurvival AnalysisMyocardiumSyndromeIncidenceEther-A-Go-Go Potassium ChannelsPeriod Circadian ProteinsSignal Processing, Computer-AssistedAdrenergic beta-AntagonistsSportsHeartVentricular Dysfunction, LeftMyocardial IschemiaRiskTreatment OutcomeInfant, NewbornWolff-Parkinson-White SyndromeEchocardiographyMutationCardiac ElectrophysiologyFetal DeathEncainideHeart DiseasesSuprachiasmatic NucleusSodium ChannelsSurvival RateHeart BlockCoronary DiseaseAutonomic Nervous SystemPotassium Channels, Voltage-GatedPedigreeProportional Hazards ModelsAction PotentialsAge FactorsPacemaker, ArtificialBrain DeathDogsMyocytes, CardiacCohort StudiesKaplan-Meier EstimateConnexin 43Actuarial AnalysisHypertrophy, Left VentricularAtrial FibrillationBiological ClocksExercise TestCryptochromesQuinidine