1. Electrophysiology service, Montreal Heart Institute, Montreal, Quebec, Canada
2. Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
3. Electrophysiology service, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
4. Cardiovascular Genetics Center, Montreal Heart Institute, Montreal, Quebec, Canada
5. Department of Physiology and Pharmacology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada