1. Starzl Unit of Abdominal Transplantation, St. Luc University Hospital; Catholic University of Louvain; Brussels Belgium
2. Department of Surgery, Oncology and Gastroenterology; University of Padua; Padua Italy
3. Gastroenterology and Hepatology, Department of Internal Medicine II; Innsbruck Medical University; Innsbruck Austria
4. Department of General Surgery and Organ Transplantation, Umberto I Hospital; Sapienza University; Rome Italy
5. UCL Institute for Liver and Digestive Health and Royal Free Sheila Sherlock Liver Center; Royal Free Hospital and UCL; London United Kingdom
6. Department of Transplantation and Hepatobiliary Surgery; University of Mainz; Mainz Germany
7. Division of General Surgery and Liver Transplantation; San Camillo Hospital; Rome Italy
8. Department of Transplant Surgery, Polyclinic Tor Vergata Foundation; Tor Vergata University; Rome Italy
9. Unit of Hepatobiliary Surgery and Transplantation; Azienda Ospedaliero-Universitaria “Ospedali Riuniti”; Torrette Ancona Italy
10. Liver Unit, Department of Surgery, Agostino Gemelli Hospital; Catholic University; Rome Italy
11. Biostatistics Unit; University of Padua; Padua Italy
12. Academic Teaching Hospital; Hall Tirol Austria