1 Internal Medicine and Gastroenterology - Hepatology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
2 Università Cattolica del Sacro Cuore, Rome, Italy.
3 Division of Internal Medicine and Hepatology, Humanitas Clinical and Research Center IRCCS, Rozzano, Italy.
4 Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy.
5 Section of Gastroenterology & Hepatology, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Palermo, Italy.
6 Internal Medicine and Hepatology Division, Department of Medicine, Surgery and Odontostomatology, "Scuola Medica Salernitana", University of Salerno, Baronissi, Italy.
7 Department of Medicine, University of Padova, Padova, Italy.
8 Section of Gastroenterology and Hepatology, PROMISE, University of Palermo, Palermo, Italy.
9 Department of Surgery, Oncology and Gastroenterology, University Hospital Padua, Padua, Italy.
10 General Surgery and Organ Transplantation Unit, Sapienza University of Rome, Rome, Italy.