1. Division of Cardiology, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
2. Division of Vascular Surgery, McGill University, Montreal, Quebec, Canada
3. Division of Medicine, McGill University Health Center, McGill University, Montreal, Quebec, Canada
4. Division of Cardiac Surgery, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
5. Division of Cardiac Surgery, Centre Hospitalier de L'Université de Montréal, Montreal, Quebec, Canada
6. Division of Cardiac Surgery, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
7. Division of Cardiology, McGill University Health Center, McGill University, Montreal, Quebec, Canada
8. Centre for Clinical Epidemiology, Lady Davis Institute, McGill University, Montreal, Quebec, Canada