Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy. Department of Clinical Medicine and Surgery, University of Naples 'Federico II', Naples, Italy. Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy. Fondazione IRCCS Casa Sollievo della Sofferenza, Division of Gastroenterology, San Giovanni Rotondo, Foggia, Italy. Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy. Hepatology and Liver Transplantation Unit, Azienda Sanitaria Universitaria Integrata, Academic Hospital, Udine, Italy. I Clinica Medica, Sapienza University of Rome, Rome, Italy.