1. Department of Gastroenterology, University Hospital of Saint-Etienne, F42270 Saint-Etienne, France
2. CIRI—Centre International de Recherche en Infectiologie, Team GIMAP, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, F42023 Saint-Etienne, France
3. CIC 1408 Inserm Vaccinology, University Hospital of Saint-Etienne, F42055 Saint-Etienne, France
4. Department of Statistics, University Claude Bernard Lyon 1, F69008 Lyon, France
5. Center for Inflammatory Bowel Disease, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
6. Department of Gastroenterology, University Hospital of Saint-Denis de la Réunion, F97400 Saint-Denis de la Réunion, France
7. Immunology Department, iBioThera Reference Center, University Hospital of Saint-Etienne, F42055 Saint-Etienne, France
8. Department of Gastroenterology, Lyon Sud Hospital, Hospices Civils de Lyon, University Claude Bernard Lyon 1 and INSERM U1111, F69003 Lyon, France