1. Department of Biomedical Sciences, Humanitas University, Milan, Italy
2. Department of Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele and Vita-Salute San Raffaele University, Milan, Italy
3. IBD Center, Humanitas Research Hospital-IRCCS, Milan, Italy
4. Department of Gastroenterology and Inserm Ngere U1256, University Hospital of Nancy, University of Lorraine, France