1. From the University Hospital Rotterdam, Dijkzigt, Thoraxcenter, Rotterdam, the Netherlands (P.J.d.F., P.W.S.); Klinik für Herzchirurgie, Landeskliniken, Salzburg, Austria (F.U.); Rambam Medical Centre, Haifa, Israel (R.B., S.M.); Cardialysis B.V., Rotterdam, the Netherlands (V.d.V., W.L.); Christian Albrechts Universität, Kiel, Germany (R.S.); Klinik für Kardiologie, Kiel, Germany (D.R.); St James’s Hospital, Dublin, Ireland (P.A.C., E.M.); Academic Hospital Middelheim, Antwerp, Belgium (P.v.d.H....