1. From the Division of Cardiology, McGill University Health Centre, Montreal, QC, Canada (V.E., J.J., M.S.); Division of Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada (D.H.B., E.Y., G.W., A.S.L.T.); Division of Cardiology, Queen Elizabeth II Health Sciences Centre, Halifax, Nova Scotia, Canada (J.L.S.); Division of Cardiology, Victoria Cardiac Arrhythmia Trials, Victoria, BC, Canada (L.D.S.); Division of Cardiology, Quebec Heart and Lung Institute, Quebec City, QC, Canada (F.P....