1. Gastroenterology and Digestive Endoscopy Unit, IRCCS AOU San Martino IST Genoa, Genoa, Italy
2. Oncologic Surgery Unit, Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Genoa, Italy
3. Pathology Unit, Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Genoa, Italy