1. Division of Cardiovascular Surgery (R.V.P.R., J.S.A., F.Y., M.B.A., N.F., V.B., V.R., M.V.B.), Toronto General Hospital, University Health Network, ON, Canada.
2. Institute of Medical Science (R.V.P.R., M.B.A., H.R., V.R.), University of Toronto, Canada.
3. Peter Munk Cardiac Center, Department of Anesthesia and Pain Management (E.P., G.M.R., M.M.), Toronto General Hospital, University Health Network, ON, Canada.
4. Perfusion and Anesthesia Services (C.S.), Toronto General Hospital, University Health Network, ON, Canada.
5. Department of Anesthesia (M.M.), University of Toronto, Canada.
6. Division of Cardiology (H.R.), Toronto General Hospital, University Health Network, ON, Canada.
7. Department of Surgery, Faculty of Medicine (V.R., M.V.B.), University of Toronto, Canada.