1 Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy.
2 Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy;; Gastroenterology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
3 Unit of Semeiotics, Liver and Alcohol-related Diseases, University of Bologna, Bologna, Italy;; IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
4 Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy;; Gastroenterology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy;. Electronic address: egiannini@unige.it.