1. Department of Medicine (A.A.), The University of British Columbia, Vancouver, Canada.
2. Center for Cardiovascular Innovation (B.D., A.K., Z.L.), The University of British Columbia, Vancouver, Canada.
3. Division of Cardiology, Section of Cardiac Electrophysiology, Western University, London, ON, Canada (H.K.).
4. Children’s Heart Center, BC Children’s Hospital, Vancouver, Canada (S.S.).
5. Cardiovascular Genetics Center, Montreal Heart Institute and Faculty of Medicine, Université de Montréal, QC, Canada (R.T., M.T., J.C.-T.).
6. Division of Cardiology, Department of Pediatrics, University of Alberta Stollery Children’s Hospital, Edmonton, Canada (J.A.).
7. Division of Cardiology, Queen Elizabeth II Health Sciences Center, Halifax, NS, Canada (D.L., M. Gardner).
8. Institut Universitaire De Cardiologie et De Pneumologie de Quebec, Laval University, Canada (C. Steinberg).
9. University of Ottawa Heart Institute, ON, Canada (S.H., M. Green).
10. Division of Pediatric Cardiology, Centre hospitalier universitaire Sainte-Justine, Université de Montreal, QC, Canada (A.F.).
11. Royal Jubilee Hospital, Victoria, BC, Canada (L.A., R.L.).
12. Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, Canada (S.K.).
13. Population Health Research Institute, Hamilton, ON, Canada (J.R., J.H.).
14. Unity Health, St. Michael’s Hospital, University of Toronto, ON, Canada (P.A.).
15. Department of Medicine, Queen’s University, Kingston, ON, Canada (C. Simpson).
16. St. Boniface Hospital, University of Manitoba, Winnipeg, Canada (C. Seifer).
17. Libin Cardiovascular Institute, University of Calgary, AB, Canada (E.I.).
18. Division of Cardiology, McGill University Health Center, Montreal, QC, Canada (J.J.).