Institution: | 1. Department of Cardiology, St. Michael''s Hospital, Toronto, Ontario, Canada;2. Department of Cardiology, Michael Garron Hospital, Toronto, Ontario, Canada;3. Department of Cardiology, Women''s College Hospital, Toronto, Ontario, Canada;4. Institut Universitaire de Cardiologie et de Pneumologie de Québec/Quebec Heart and Lung Institute, Québec City, Québec, Canada;5. Department of Cardiology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada |