Electrocardiography, AmbulatoryElectrocardiographyArrhythmias, CardiacHeart RateExercise TestEchocardiographyMagnetocardiographyVectorcardiographySignal Processing, Computer-AssistedChest PainHeart Conduction SystemMyocardial InfarctionHypertrophy, Left VentricularHeart AuscultationHeartPredictive Value of TestsSensitivity and SpecificityCoronary AngiographyCoronary DiseaseDipyridamoleDeath, Sudden, CardiacMyocardial IschemiaThalliumHeart BlockHeart DiseasesCardiotocographyProspective StudiesPeripartum PeriodKinetocardiographyDobutamineCardiomyopathiesTachycardia, SinusTelemetryCardiologyMonitoring, PhysiologicAtrial FibrillationSyncopeVentricular Premature ComplexesAngina PectorisRadionuclide VentriculographyWolff-Parkinson-White SyndromePrognosisTachycardia, VentricularBradycardiaTachycardia, SupraventricularCardiology Service, HospitalEmergency Medical TechniciansBundle-Branch BlockFollow-Up StudiesTroponin TCardiomyopathy, HypertrophicThallium RadioisotopesVentricular Dysfunction, LeftCardiovascular AbnormalitiesHeart VentriclesTime FactorsAtrioventricular BlockPhysical ExaminationHeart Function TestsCoronary Artery DiseaseRisk FactorsElectrodesPericarditis