1. Montreal Heart Institute, Department of Medicine, Université de Montréal, Montreal, Canada (J.G.A., M.D., L.M., P.K.).
2. Heart Rhythm Services, Department of Medicine, University of British Columbia, Vancouver, Canada (J.G.A., M.W.D., M.T.B.).
3. Université Laval, Quebec City, Canada (J.C., C.S.).
4. Southlake Regional Health Center, Newmarket, Canada (A.V.).
5. Department of Medicine, University of Western Ontario, London, Canada (P.L.-S., A.S.L.T.).
6. Royal Jubilee Hospital, Victoria, Canada (P.N.).
7. Centre Hospitalier Universitaire de Sherbrooke, Canada (M.B.-V.).
8. Queen Elizabeth II Health Sciences Centre and Dalhousie University, Halifax, Canada (J.S.).
9. Department of Medicine, St Michael’s Hospital, Toronto, Canada (I.M.).
10. University of Winnipeg, Canada (C.K.).