1. Gastroenterology and Digestive Endoscopy Unit, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy
2. Interventional Endoscopy Center, University Hospital Mainz, Mainz, Germany
3. Pathology and Cytodiagnostic Unit, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy
4. Surgical Division, Quanta System S.p.A., Varese, Italy
5. Division of General Surgery I, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy
6. Academic Urology Department, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy