1. AOU Città della Salute e della Scienza di Torino, University of Turin, Gastroenterology Department, Endoscopy Unit, Turin, Italy
2. Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
3. Pathology Unit, Department of Medical Sciences, University of Turin, Turin, Italy
4. General Surgery 2U and Liver Transplantation Center, University of Turin, Turin, Italy.