1. From the Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada (D.H.B., L.H., M.G., G.W., A.T.); the Division of Cardiology, University Health Network, Toronto, Ontario, Canada (A.H.); the Division of Cardiology, Island Medical Program, University of British Columbia, British Columbia, Canada (A.T., K.S.); the Division of Cardiology, Quebec Heart and Lung Institute, Laval University, Quebec City, Quebec, Canada (F.P.); and the Division of Cardiology, Montreal Heart...