1. From the Cardioangiologisches Centrum Bethanien, Frankfurt, Germany (B.S., S.B., A.K., L.P., K.R.J.C.); Na Homolce Hospital, Prague, Czech Republic (P.N., J.P., L.S.); Städtisches Klinikum, Karlsruhe, Germany (A.L., M.M.); Hospital Universitari i Politècnic la Fe, Valencia, Spain (J.O.A., O.C.); University Hospital Bonn, Germany (J.W.S.); and Herzzentrum, Bad Neustadt, Germany (T.D.).