1. Department of Visceral, Thoracic, Transplantation and Vascular Surgery, University Medical Center Leipzig, Leipzig, Germany
2. Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
3. Department of Medical Psychology and Medical Sociology, University Medical Center Leipzig, Leipzig, Germany
4. Deptartment of Visceral, Thoracic, Transplantation and Vascular Surgery , University Medical Center Leipzig, Leipzig, Germany
5. Transplant Surgery Research Laboratory and Division of Transplant Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
6. Department of General, Visceral and Transplant Surgery, Campus Virchow, Charité-Universitätsmedizin Berlin, Berlin, Germany