Cardiac Electrophysiological Substrate Underlying the ECG Phenotype and Electrogram Abnormalities in J wave Syndrome Patients - IDSS 2016 - The 13th International Dead Sea Symposium, March 6-9, 2016, David Intercontinental Convention Center, Tel Aviv The 13th International Dead Sea Symposium (IDSS) on Innovations in Cardiac Arrhythmias and Device Therapy