1. Department of Surgical Oncology Institut régional du Cancer de Montpellier (ICM) – Val d'Aurelle Montpellier France
2. Department of Surgical Oncology Centre Léon Berard Lyon France
3. Montpellier Cancer Institute, Biometrics Unit Montpellier France
4. Department of Surgical Oncology Institut Paoli Calmettes Marseille France
5. Colorectal département CHU Bordeaux Bordeaux France
6. Department of Surgical Oncology Centre Oscar Lambret Lille France
7. Department of Radiation Oncology Institut Sainte Catherine Avignon France
8. Department of Surgical Oncology Gustave Roussy (hopit Mal Lariboisiere APHP) Paris France
9. Colorectal département CHU Grenoble Grenoble France
10. Department of Surgical Oncology Centre René Gauducheau Nantes France
11. Colorectal département CHU Clermont‐Ferrand Clermont‐Ferrand France
12. Colorectal département CHU Montpellier Montpellier France
13. Colorectal département CHU Nancy Nancy France
14. Department of Radiotherapy CHU Grenoble Grenoble France
15. Department of Radiotherapy Institut régional du Cancer de Montpellier (ICM) – Val d'Aurelle Montpellier France