1. From the Division of Cardiology, Rouge Valley Health System, Scarborough, ON, Canada (R.V.); Division of Cardiac Surgery, Keenan Research Centre for Biomedical Science and Li Ka Shing Knowledge Institute of St. Michael’s Hospital, Toronto, ON, Canada (S.V.); University of Ottawa, Ottawa, ON, Canada (N.G.); and Division of Cardiology, Vancouver General Hospital, Vancouver, BC, Canada.