1. Institut Imagine; Laboratory of Intestinal Immunity, INSERM UMR1163
2. Institut Necker Enfants Malades; Laboratory of Host-Microbiota Interaction, INSERM U1151
3. Université Paris Descartes-Sorbonne; 75006 Paris France
4. Institut Pasteur, Unité de Pathogénie Microbienne Moléculaire; INSERM U1202, and College de France; Paris France