Maral Ouzounian1, Amine Mazine2, Tirone E David2. 1. Peter Munk Cardiac Centre, Division of Cardiac Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada. Electronic address: Maral.ouzounian@uhn.ca. 2. Peter Munk Cardiac Centre, Division of Cardiac Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.