Affiliation: | a Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottowa, Ontario, Canada b Division of Cardiac Surgery, Queen's University, Kingston, Kingston, Ontario, Canada c Division of Cardiac Surgery, Royal Victoria Hospital, Montreal, Quebec, Canada d Department of Epidemiology and Community Medicine, University of Ottawa, Ottowa, Ontario, Canada e Division of Cardiac Anaesthesia, University of Ottawa Heart Institute, Ottowa, Ontario, Canada f Division of Perfusion, University of Ottawa Heart Institute, Ottowa, Ontario, Canada g Department of Medicine, University of Ottawa, Ottowa, Ontario, Canada |