1. Université Reims Champagne-Ardenne, Department of Gastroenterology and Digestive Oncology, Reims University Hospital, Reims, France
2. Department of Surgical and Molecular Pathology, Gustave Roussy, Villejuif, France
3. Department of Medical Oncology, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon 69437, France