1. Hepato‐Gastroenterology and Digestive Oncology University Hospital CHU of Liège Liège Belgium
2. Department of Gastroenterology and Endoscopy IRCCS San Raffaele Hospital and Vita‐Salute San Raffaele University Milan Italy
3. Department of Biomedical Sciences Humanitas University Pieve Emanuele Milan Italy
4. Université de Lorraine CNRS Laboratoire IMoPA Nancy France
5. Department of Gastroenterology University of Lorraine CHRU‐Nancy Nancy France
6. University of Lorraine Inserm, NGERE Nancy France