1. Departments of Digestive and Medical Oncology, Hôpital Beaujon (AP-HP, Clichy) and Paris University, France
2. Department of Pharmacy, Hôpital Beaujon (AP-HP, Clichy) and Paris University, France
3. Department of Pathology, Hôpital Beaujon (AP-HP, Clichy) and Paris University, France
4. Department of Gastroenterology and Pancreatology, Hôpital Beaujon (AP-HP, Clichy) and Paris University, France