1. Department of 1Gastroenterology and HepatologyNetherlands Cancer Institute AmsterdamThe Netherlands
2. Department of Gastroenterology and Hepatology Erasmus Medical Center University Hospital RotterdamThe Netherlands
3. Department of Gastroenterology and HepatologyUniversity Medical Center Utrecht UtrechtThe Netherlands
4. Department of Gastroenterology and HepatologyRadboud University Medical Center NijmegenThe Netherlands
5. Department ofRadiation OncologyNetherlands Cancer Institute AmsterdamThe Netherlands
6. Department of Gastroenterology and Hepatology Amsterdam University Medical Centers AmsterdamThe Netherlands
7. Department ofMedical OncologyNetherlands Cancer Institute AmsterdamThe Netherlands
8. Department of 8Hematology Erasmus MC Cancer Institute RotterdamThe Netherlands
9. Department of Radiation Oncology Erasmus MC Cancer Institute RotterdamThe Netherlands
10. Department ofHematology University Medical Center Utrecht UtrechtThe Netherlands
11. Department ofRadiation Oncology University Medical Center Utrecht UtrechtThe Netherlands
12. Department of Radiation Oncology Radboud University Medical Center NijmegenThe Netherlands
13. Department ofPathology Netherlands Cancer Institute AmsterdamThe Netherlands
14. Department ofEpidemiology Netherlands Cancer Institute AmsterdamThe Netherlands
15. Department of Gastroenterology and Hepatology Leiden University Medical Center Leiden The Netherlands