1. Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma, 67, 56100 Pisa, Italy
2. Tuscany North West ASL, Department of General Surgery and Gastroenterology, Pontedera Hospital, Via Roma, 147, 56025 Pontedera, Italy
3. Department of Clinical and Experimental Medicine, University of Pisa, Via Roma, 67, 56100 Pisa, Italy
4. Department of General Surgery and Gastroenterology, IBD Unit, Pisa University Hospital, Via Paradisa, 2, 56124 Pisa, Italy