1. Department of Medical Oncology, Franco-British Hospital–Fondation Cognacq-Jay, Levallois-Perret, France
2. Statistical Unit, Aide et Recherche en Cancérologie Digestive, Foundation, Levallois-Perret, France
3. Methodology and Quality of Life Unit in Oncology, University Hospital of Besançon, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France
4. Institute of Oncology, Davidoff Cancer Center, Rabin Medical Center, Petah Tiqva, Tel Aviv University, Tel Aviv, Israel
5. Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
6. Department of Medical Oncology, Institut Català d'Oncologia-Bellvitge Institute for Biomedical Research, L’Hospitalet, Barcelona, Spain
7. Department of Medical Oncology, General Universitario de Elche Hospital, Elche, Spain
8. Department of Medical Oncology, Hospital Clinico Universitario de Valencia, Valencia, Spain
9. Department of Medical Oncology, Lakeridge Health R.S. McLaughlin Durham Regional Cancer Centre, Oshawa, Ontario, Canada
10. Division of Medical Oncology, Department of Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Canada
11. Department of Gastroenterology and Hepatology, Institut de Cancérologie de l’Ouest Paul Papin, Angers, France
12. Department of Radiotherapy and Oncology Gastrointestinal and Liver, Institut Sainte Catherine, Avignon, France
13. Medical Oncology Unit, Arcispedale Santa Maria Nuova-Istituto di Ricovero e Cura a Carattere Scientifico, Reggio Emilia, Italy
14. Department of Oncology, Weston Park Hospital Cancer Research Centre, Sheffield, United Kingdom
15. Medical Oncology Unit, Ramathibodi Hospital, Bangkok, Thailand
16. Department of Internal Medicine and Medical Oncology, Radboud University Medical Center, Nijmegen, Netherlands
17. Digestive Tumor Unit, Department of Oncology, Hôpitaux Universitaires de Genève, Geneva, Switzerland
18. First Department of Internal Medicine, University Hospital of Mainz, Mainz, Germany
19. Department of Medical Oncology, Reina Sofía University Hospital, Córdoba, Spain
20. Department of Gastroenterology and Digestive Oncology, University Hospitals Gasthuisberg/Leuven and KULeuven, Leuven, Belgium
21. Department of Medical Oncology, Vall d’Hebron University Hospital and Vall d’Hebron Institute of Oncology, Universitat de Vic–Universitat Central de Catalunya, International Oncology Bureau–Quiron, Barcelona, Spain
22. Department of Oncology and Hematology, Martin Luther University, Halle, Germany
23. Department of Radiology and Oncology, Instituto de Câncer do Estado de São Paulo, São Paulo, Brazil
24. Department of Medical Oncology, Hôpital Saint-Antoine, Assitance Publique des Hôpitaux de Paris, Paris, France