1. From the QEII Health Sciences Centre, Halifax, Nova Scotia, Canada (R.P., J.L.S.); Dalhousie University, Halifax, Nova Scotia, Canada (R.P., J.L.S.); Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Quebec City, Canada (I.N.); Montreal Heart Institute, Quebec, Canada (L.R.); University of Western Ontario, London, Canada (L.G., A.S.L.T.); McGill University Health Center, Montreal, Quebec, Canada (V.E.); Hôpital Sacré-Coeur de Montréal, Quebec, Canada (V.E.); University of Ottawa...