[1] Erasmus MC, Thoraxctr, Rotterdam, Netherlands
[2] Univ Klinikum Saarlandes, Homburg, Germany
[3] Asklepios, Hamburg, Germany
[4] Sahlgrens Univ Hosp, Gothenburg, Sweden
[5] Univ Klinikum Schleswig Holstein, Lubeck, Germany
[6] CardioVasc Ctr Frankfurt, Frankfurt, Germany
[7] Univ Hosp Essen, Essen, Germany
[8] Univ Herzzentrum Freiburg, Bad Krozingen, Germany