1. Surgery of the Alimentary Tract, S. Orsola-Malpighi Hospital and Department of Medical and Surgical Sciences University of Bologna, Bologna, Italy
2. IBD Unit, S. Orsola-Malpighi Hospital and Department of Medical and Surgical Sciences, University of Bologna, Italy
3. Radiology Unit, Department of Digestive Disease and Internal Medicine, S. Orsola-Malpighi Hospital, Bologna, Italy
4. Plastic Surgery Unit, S. Orsola-Malpighi Hospital and Department of Medical and Surgical Sciences, University of Bologna, Italy