1. Department of Gastroenterology University Hospital of Saint‐Etienne Saint‐Etienne France
2. CIRI (Centre International de Recherche en Infectiologie) Université Claude Bernard Lyon 1, INSERM U1111, CNRS, UMR5308, ENS Lyon, Université Jean Monnet de Saint‐Etienne France
3. Immunology Laboratory CIC1408, University Hospital of Saint‐Etienne Saint‐Etienne France
4. Departemnt of Gastroenterology CHU Reunion France
5. Department of Gastroenterology Lyon Sud Hospital, Hospices Civils de Lyon, University Claude Bernard Lyon 1 Lyon France