1. Thoracic Surgery Unit, Azienda Ospedaliera Santa Maria, Terni, Italy
2. Medical and TranslationalOncology Unit, Azienda Ospedaliera Santa Maria, Terni, Italy
3. Digestive Endoscopic Unit, Ospedale Niguarda, Milano, Italy
4. Department of Medicine and Surgery, University of Perugia, Perugia, Italy
5. Division of Interventional Radiology, Azienda Ospedaliera Santa Maria, Terni, Italy
6. Digestive Endoscopic Unit, Azienda Ospedaliera Santa Maria, Terni, Italy