1. Division of Electrophysiology, Department of Pediatric Cardiology, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, Montreal, Québec, Canada
2. Electrophysiology Service, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada
3. Electrophysiology Service, Department of Cardiology, Saint-Etienne University Hospital Center, SaintEtienne, France