1. Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
2. Paris Descartes University, Paris, France
3. Department of Digestive Surgery, Cochin Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
4. Department of Pathology, Cochin Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
5. Gastroenterology and Gastrointestinal Endoscopy, Georges Pompidou European Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
6. Department of Digestive Surgery, Georges Pompidou European Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
7. Gastroenterology, Jean Mermoz Private Hospital, Lyon, France
8. Department of Gastroenterology, Les Cliniques Saint Joseph, Liège, Belgium
9. Department of Gastroenterology, CHU Sart-Tilman, Liège, Belgium
10. Department of Gastroenterology and Digestive Oncology, Cochin Hospital, 27, Rue du Faubourg St Jacques, 75014 Paris, France