1. Gastroenterology and Endoscopy Unit, ASST Rhodense, Garbagnate Milanese, Milan, Italy
2. Gastroenterology, Department of Clinical Medicine and Surgery, School of Medicine Federico II of Naples, Naples, Italy
3. Gastroenterology and Endoscopy Unit, AORN A Cardarelli, Naples, Italy
4. Pathology Unit, ASST Rhodense, Garbagnate Milanese, Milan, Italy
5. Surgery Unit, ASST Rhodense, Garbagnate Milanese, Milan, Italy