[1] Univ Pisa, Dept Translat Res & New Technol Med & Surg, Gen Surg Unit, Via Paradisa 2, I-56124 Pisa, Italy
[2] Azienda Osped Univ Pisana, Dept Surg, Intervent & Pediat Endoscop Unit, Pisa, Italy
[3] Azienda Osped Univ Pisana, Imaging Dept, Intervent Radiol Div, Pisa, Italy
[4] Univ Pisa, Gastroenterol Unit, Pisa, Italy