1. Department of Endoscopy and Gastroenterology, Edouard Herriot Hospital, Lyon, France
2. Department of Endoscopy and Gastroenterology, Limoges University Hospital, Limoges, France
3. Department of Digestive Pathology, Limoges University Hospital, Limoges, France
4. Inserm U1032 LabTau, Lyon, France