1. University Grenoble Alpes CEA Inserm IRIG BGE Grenoble France
2. Gastroenterology Service Hôpital Civil Marie Curie Charleroi Belgium
3. Department of Gastroenterology, Hepatopancreatology and GI Oncology Erasme University Hospital Brussels Belgium
4. Department of Medicine Geneva University Geneva Switzerland
5. Division of Gastroenterology Geneva University Hospitals Geneva Switzerland