1. University Hospital of Besançon, Department of Digestive Surgery , Besançon , France
2. Sorbonne Université, Department of Digestive Surgery, AP-HP, Hôpital Saint Antoine , Paris , France
3. University Hospital of Besançon, Methodology and Quality of Life Unit in Oncology , Besançon , France
4. Établissement Français du Sang Bourgogne Franche-Comté, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique , Besançon , France
5. European Georges Pompidou Hospital, Department of Digestive and Oncologic Surgery , Paris , France
6. Bicêtre Hospital, Department of Digestive Surgery and Surgical Oncology , Le Kremlin Bicêtre , France
7. Lille University Hospital, Department of Digestive Surgery and Transplantation , Lille , France
8. University Hospital of Nantes, Digestive and Endocrine Surgery Clinic , Nantes , France
9. St Louis Hospital, Department of General- Endocrine and Digestive Surgery , Paris , France
10. University Hospital of Besançon, Department of Gastroenterology , Besançon , France