1. Department of Cardiothoracic Transplantation
2. Department of Cardiothoracic Surgery, University Hospital of Cologne, Cologne, Germany
3. Department of Cardiothoracic Surgery, Heart Center, University Hospital Cologne, Cologne, Germany
4. Department of Cardiac Surgery, Heart and Marfan Center, University of Heidelberg, Heidelberg, Germany
5. Department of Cardiovascular Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany