1. Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
2. Department of Gastroenterology, Azienda Ospedaliero-Universitaria and University of Modena and Reggio Emilia, Modena, Italy
3. Hepatology Service, EOC, Bellinzona, Switzerland
4. Department of Medical and Surgical Sciences, University of Bologna and Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
5. Multivisceral Transplant Unit, Department of Surgery, Oncology and Gastroenterology, Padua University Hospital, Padua, Italy