1. Department of Radiology, University Hospitals Paris Nord Val de Seine, Beaujon Hospital, AP-HP, 100 Blvd du Général Leclerc. 92118 Clichy, France
2. University of Paris, Paris, France
3. Department of Gastroenterology, University Hospitals Paris Nord Val de Seine, Beaujon, Clichy, France
4. Department of Abdominal Radiology, University Hospital of Besançon, Besançon, France
5. INSERM U1149, Centre de recherche biomédicale Bichat-Beaujon, Paris, France