aDivision of Cardiac Surgery

bDepartment of Anesthesia

cDivision of Cardiology, St. Michael's Hospital, University of Toronto, Toronto, Canada

dKeenan Research Centre for Biomedical Science and Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada

Correspondence to Subodh Verma, MD, PhD, FRCSC, Professor and Cardiac Surgeon, St. Michael's Hospital, University of Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada. Tel: +1 416 864 5997; fax: +1 416 864 5881; e-mail: [email protected]