1. From the Sussex Cardiac Centre, Brighton and Sussex University Hospitals, United Kingdom (D.H.-S., L.B., N.S.); Edinburgh Heart Centre, United Kingdom (M.W.B.); Department of Cardiology, Aarhus University Hospital, Skejby, Denmark (J.F.L., M.M.); Department of Cardiology, San Raffaele Scientific Institute, Milan, Italy (A.C.); Institute Cardiovasculaire Paris Sud, Hospital Privé Jacques Cartier, Massy, France (T.L., T.H., Y.L.); Department of Cardiology, Clinical Centre of Serbia, Belgrade (G.S.);...