1 Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada; Division of Cardiac Surgery, University of Toronto, Toronto, Ontario, Canada. Electronic address: vervoortdominique@hotmail.com.
2 Division of Cardiac Surgery, University of Toronto, Toronto, Ontario, Canada.
3 Montréal Heart Institute, Université de Montréal, Montréal, Québec, Canada.
4 Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada; Division of Cardiac Surgery, University of Toronto, Toronto, Ontario, Canada; Schulich Heart Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.