1. IBD Centre, Humanitas Clinical and Research Centre, Rozzano, Milan, Italy
2. Department of Biomedical Sciences, Humanitas University, Rozzano, Milan, Italy
3. Department of Gastroenterology, Universidade Federal de São Paulo UNIFESP, São Paulo, Brazil
4. Service of Echography, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
5. Department of Gastroenterology and Inserm U954, University Hospital of Nancy, Lorraine University, Nancy, France