1. Department of Visceral, Transplant and Thoracic Surgery Center of Operative Medicine Medical University of Innsbruck Innsbruck Austria
2. Department of Surgery Johns Hopkins University School of Medicine Baltimore Maryland USA
3. Department of Epidemiology Johns Hopkins School of Public Health Baltimore Maryland USA
4. Department of Plastic and Reconstructive Surgery Vascularized Composite Allotransplantation (VCA) Laboratory Johns Hopkins University School of Medicine Baltimore Maryland USA
5. Scientific Registry of Transplant Recipients Minneapolis Minnesota USA