1. Cardiac Electrophysiology Section, Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio
2. Clinical Cardiovascular Research Center, University of Rochester Medical Center, Rochester, New York
3. Divisions of Heart Rhythm Services and Pediatric Cardiology, Departments of Cardiovascular Medicine, Pediatric and Adolescent Medicine, and Molecular Pharmacology & Experimental Therapeutics, Windland Smith Rice Genetic Heart Rhythm Clinic and Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, Rochester, Minnesota
4. Heart Center, Amsterdam Cardiovascular Sciences, Department of Clinical and Experimental Cardiology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
5. European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart, Amsterdam, the Netherlands
6. Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan