1. Departments of Medicine and Oncology, Mayo Clinic and Mayo Comprehensive Cancer Center, Rochester, Minnesota
2. Paris Descartes University, Sorbonne Paris Cité, France
3. Department of Gastroenterology and Digestive Oncology, European Georges Pompidou Hospital, APHP, Paris, France
4. Alliance Statistics and Data Center, Mayo Clinic, Rochester, Minnesota
5. Department of Oncology, Mayo Clinic, Rochester, Minnesota
6. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
7. Department of Pathology, Ambroise Paré Hospital, APHP, Boulogne-Billancourt, France
8. Versailles Saint-Quentin-en-Yvelines University, Boulogne-Billancourt, France
9. Radiotherapy Unit, Departemental Hospital Center, La Roche Sur Yon, France
10. Medical Oncology Department, Vall d‘Hebron University Hospital and Institute of Oncology, Universitat Autònoma de Barcelona, Barcelona, Spain
11. Section of Internal Medicine, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
12. Division of Medical Oncology, Ohio State University, Columbus
13. First Medical Department, University Hospital Carl Gustav Carus, Dresden, Germany
14. Department of Gastroenterology, Erasme Hospital University, Brussels, Belgium
15. Department of Statistics, Fédération Francophone de Cancérologie Digestive, Dijon, France
16. UMR-S 1147, INSERM, Paris, France
17. Department of Biology, European Georges Pompidou Hospital, APHP, Paris, France