1. Inserm U954 and Department of Gastroenterology; University Hospital of Nancy, Lorraine University; Vandoeuvre-lès-Nancy France
2. Department of Gastroenterology; University Hospital of Saint Etienne; Saint-Etienne France
3. IBD Center, Department of Gastroenterology; Humanitas Clinical and Research Center; Milan Italy
4. Clinical Research Support Facility PARC; Nancy University Hospital; Nancy France