1. Department of Surgery and Transplantation, Swiss HPB Centre University Hospital Zurich Zurich Switzerland
2. HPB and Transplant Unit, Department of Surgical Sciences University of Rome Tor Vergata Rome Italy
3. Department of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
4. Department of Surgery, Spital Männedorf Männedorf Switzerland
5. Transplantation Center, Digestive Disease and Surgery Institute and Department of Immunology, Lerner Research Institute Cleveland Clinic Cleveland Ohio USA
6. Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Centre of Preclinical Research Milan Italy