1. McMaster University and Population Health Research Institute, Hamilton Health Sciences, Hamilton, Ontario, Canada
2. Peter Munk Cardiac Centre, University Health Network, Toronto, Ontario, Canada
3. Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
4. Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
5. McGill University Health Centre, Montreal, Quebec, Canada
6. London Health Sciences Centre, Western University, London, Ontario, Canada
7. Southlake Regional Health Center, University of Toronto, Toronto, Ontario, Canada
8. Schulich Heart Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada