1. Division of Cardiology, University of Toronto, Canada
2. Peter Munk Cardiac Centre, University Health Network, Toronto, Canada
3. Institute for Clinical Evaluative Sciences, Toronto, Canada
4. Department of Emergency Medicine, Sunnybrook Health Sciences Centre, Toronto, Canada
5. Institute for Health Policy, Management and Evaluation, Toronto, Canada
6. Department of Anesthesia, University Health Network, Toronto, Canada
7. Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
8. Joint Department of Medical Imaging, University Health Network, Toronto, Canada