1. General Surgery and Organ Transplantation Unit AOU Policlinico Umberto I, Sapienza University of Rome Rome Italy
2. Department of Medical and Surgical Sciences, Fondazione Policlinico Gemelli Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Rome Italy
3. 4th Surgery Unit, Regional Hospital Treviso, DISCOG University of Padua Padua Italy
4. Unit of Clinical Medicine and Hepatology University Campus Bio‐Medico Rome Italy
5. Hepatobiliary surgery and liver transplantation University of Pisa Medical School Hospital Pisa Italy
6. Department of Clinical Medicine and Surgery, Gastroenterology and Hepatology Unit University of Naples "Federico II" Napoli Italy
7. Unit of Hepatobiliary Surgery and Transplantation, Polytechnic University of Marche Azienda Ospedaliero‐Universitaria "Ospedali Riuniti" Torrette Ancona Italy
8. Liver‐Kidney Transplantation Unit, Department of Medicine University of Udine Udine Italy
9. Gastroenterology Unit, Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino University of Genoa Genoa Italy