1. From the Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada (D.S.L., J.H., X.W., P.C.A., J.V.T.); Peter Munk Cardiac Centre (D.S.L., K.N.) and Joint Department of Medical Imaging (D.S.L.), University Health Network (D.S.L., K.N.), Institute for Health Policy, Management and Evaluation (D.S.L., P.C.A., J.V.T.), Division of Cardiology, Department of Medicine, Sunnybrook Health Sciences Centre (E.C., J.V.T.), and Division of Cardiology, Department of Medicine, St. Michael’s Hospital ...