1. Department of Gastroenterology, Claude Huriez Hospital, University of Lille 2, Lille, France
2. Inserm, CHU Lille, U1286- INFINITE- Institute for Translational Research in Inflammation, University of Lille, Lille, France
3. Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele and Vita-Salute San Raffaele University, Milan, Italy
4. CHRU-Nancy, Department of Gastroenterology,University of Lorraine, Nancy, France
5. Inserm, University of Lorraine, Nancy, France