1. Université Clermont Auvergne, Inserm, Service d’Hépato-Gastro Entérologie, Clermont-Ferrand, France
2. Université Clermont Auvergne, Inserm U1071, Clermont-Ferrand, France
3. Archet 2 University Hospital, Department of Gastroenterology, Nice, France
4. Hospital Henri-Mondor, Department of Gastroenterology, Creteil, France
5. University Hospital of Reims, Gastroenterology, Reims, France
6. APHP, Hopital Saint Louis, Department of Gastroenterology, Paris, France
7. Hopital Lariboisiere, Gastroenterologie, Paris, France
8. Beaujon Hospital, Department of Gastroenterology, Clichy la Garenne, France
9. CHU de Montpellier, Department of Gastroenterology, Montpellier, France
10. APHP, Bichat Hospital, Gastroenterology Department, Paris, France
11. Hospices Civils de Lyon, Lyon-Sud Hospital, Gastroenterology, Pierre Benite, France
12. APHP-IMM, Gastroenterology Department, Paris, France
13. University Hospital of Besançon, Gastroenterology, Besançon, France
14. Tourcoing Hospital, Gastroenterology Department, Tourcoing, France
15. University Hospital of Saint Antoine, APHP, Gastroenterology, Paris, France
16. University Hospital of Lille, Gastroenterology, Lille, France
17. Amiens University Hospital, Gastroenterology, Amiens, France
18. University Hospital Haut Levesque, Gastroenterology, Pessac, France
19. Nancy University Hospital, Inserm NGERE U1256, Department of Gastroenterology, Vandoeuvre les Nancy, France
20. Liège University Hospital, Department of Gastroenterology, Liege, Belgium
21. Centre de Recherche Epidémiologie et Statistiques, Equipe ECSTRRA, Université de Paris, Hôpital Saint-Louis, Paris, France