1. ERL U1157/UMR 7203. Inserm; Paris VI University; Paris France
2. Department of Gastroenterology; Louis Mourier Hospital; AP-HP; Colombes France
3. Inserm U987 Physiopathologie et pharmacologie Clinique de la douleur; Hôpital Ambroise Paré; AP-HP; Boulogne France
4. Department of Gastroenterology and Nutrition; Saint Antoine Hospital; AP-HP; Paris France
5. INRA; UMR1319 Micalis; Jouy-en-Josas France
6. Biochemistry Department; Saint Antoine Hospital; AP-HP; Paris France