1. Department of Gastroenterology, University Hospital of Saint-Etienne , Saint-Etienne , France
2. Department of Gastroenterology, Lyon Sud hospital, Hospices Civils de Lyon, University Claude Bernard Lyon 1 , Lyon , France
3. Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, MA , USA
4. Clinique gastroentérologique Nantes , Nantes , France
5. Service gastroentérologie CHU Saint Pierre Ile de la reunion , Saint Pierre , Reunion
6. Department of immunology University Claude Bernard , Lyon , France
7. Immunology laboratory, CIC1408, University Hospital of Saint-Etienne, Saint-Etienne, France., 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