1. Department of Biotechnological and Applied Clinical Sciences, ASL1 Abruzzo, San Salvatore Hospital, L’Aquila, Italy
2. Department of Radiology, ASL1 Abruzzo, San Salvatore Hospital, L’Aquila, Italy
3. Surgical Endoscopy Unit, ASL1 Abruzzo, San Salvatore Hospital, L’Aquila, Italy