1. Department of Endoscopy and Gastroenterology, Pavillon L, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
2. Department of Endoscopy and Gastroenterology, Valence Public Hospital, Valence, France
3. Department of Digestive Pathology, East University Hospitals, Lyon, France
4. Inserm U1032 LabTau, Lyon, France