1 Université Paris Descartes-Sorbonne Paris Centre, Gastroenterology Department, Hôpital Européen Georges Pompidou APHP, Paris, France; Inserm UMR 1163 and Institute Imagine, Paris, France.
2 Université Paris Descartes-Sorbonne Paris Centre, Inserm UMR 1163 and Institute Imagine, Paris, France.