1. Department of Pediatric Gastroenterology Hepatology and Nutrition, Children's Hospital of Nancy, Nancy, France
2. Department of Endoscopy and Gastroenterology, Hôpital Edouard Herriot, Lyon, France
3. CHRU-Nancy, DRCI, Département MPI, Unité de Méthodologie, Data management et Statistique UMDS, Nancy, France
4. Department of Digestive Endoscopy, Aix-Marseille Université, AP-HM, Hôpital Nord, Marseille, France
5. Gastroenterology Department, Kremlin-Bicêtre University Hospital, Paris, France
6. Gastroenterology Department, University Hospital, Nice, France
7. Department of Gastroenterology, Cochin Hospital, Paris, France
8. Gastroenterology Department, Claude Huriez Hospital, Lille, France
9. Hepatogastroenterology Department, AP-HM, Hôpital La Timone, Marseille, France
10. Department of Endoscopy and Gastroenterology, Lapeyronie Hospital, Montpellier, France
11. Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, France
12. Department of Gastroenterology, University Hospital of Besançon, Besançon, France
13. Department of Pediatric Hepatology, Gastroenterology and Nutrition, CHU Besançon, Besançon, France
14. Department of Hepato-gastro-enterology, University Hospital of Saint-Etienne, Saint-Etienne, France
15. Digestive Endoscopy Department, Nantes University Hospital, Nantes, France
16. Department of Gastroenterology, Amiens University Hospital, Université de Picardie Jules Verne, Amiens, France
17. Department of Endoscopy and Hepatogastroenterology, Regional University Hospital of Nancy, Nancy, France
18. Department of Pediatric Gastroenterology and Hepatology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
19. Department of Hepatogastroenterology, Cliniques Universitaires Saint-Luc, Brussels, Belgium