1. Digestive Oncology Unit, Department of Hepato-Gastroenterology; Rouen University Hospital; Rouen France
2. Inserm U1079, University of Rouen, Institute for Biomedical Research and Innovation; Rouen France
3. EquIpe de Recherche en ONcogie (IRON), Rouen University Hospital; Rouen France
4. Department of Biostatistics; Rouen University Hospital; Rouen France
5. Department of Pathology; Rouen University Hospital; Rouen France
6. Department of Pathology; Dijon University Hospital, University of Burgundy; Dijon France
7. Department of Medical Oncology; Lille University Hospital; Lille France
8. Department of Pathology; Lille University Hospital; Lille France
9. Department of Surgery; Rouen University Hospital; Rouen France
10. Department of Medical Oncology; Centre Henri Becquerel; Rouen France
11. Digestive Cancer Registry of Burgundy, INSERM U866, University Hospital Dijon, University of Burgundy; Dijon France