1. From the Thoraxcenter, Erasmus MC, Rotterdam, the Netherlands (K.T., P.W.S., M.D., N.B., R.H., A.H., J.M.R.L.); Heart Center Siegburg, Siegburg, Germany (E.G.); Ospedali Riuniti di Bergamo, Bergamo, Italy (G.G.); Medizinische Klinik Weisser Hirsch, Dresden, Germany (W.U.); Catharina Ziekenhuis Eindhoven, Eindhoven, the Netherlands (J.B.); Hôpital Cardiologique–CHU, Lille, France (M.L.); J. Strus Hospital, Poznan, Poland (T.S.); Haukeland Hospital, Bergen, Norway (J.N.); Friedrich-Schiller...