1. From the Department of Internal Medicine II, Division of Cardiology, (P.E.B., S.G., A.K., J.B.-K., R.R., G.M.) and Center for Medical Statistics, Informatics and Intelligent Systems (G.H.), Medical University of Vienna, Vienna, Austria; Laval Hospital/Québec Heart Institute, Laval University, Québec, Canada (M.A.C., J.G.D., M.S., P.P.); University of Ottawa Heart Institute, Ottawa, Ontario, Canada (I.G.B.); and Department of Cardiovascular Medicine, Divsion of Adult Congenital and Valvular Heart...