1. Gastroenterology Department Amiens University Hospital, Peritox, Université de Picardie Jules Verne Amiens France
2. Department of Gastroenterology, Lyon Sud Hospital, Hospices Civils de Lyon University Claude Bernard Lyon 1 and 2 INSERM U1111, CIRI Lyon France
3. Gastroenterology Department Polyclinique Saint Jean Cagnes sur Mer France
4. Montpellier University Hospital, Gastroenterology Montpellier France
5. Department of Gastroenterology and Clinical Nutrition Université Côte d'Azur, CHU de Nice Nice France
6. St Etienne University Hospital, Gastroenterology St Etienne France
7. Biostatistics Department Amiens University Hospital Amiens France
8. St Etienne University Hospital, Immunology St Etienne France