1. Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
2. Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
3. Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
4. Department of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands
5. Department of Radiotherapy, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
6. Department of Medical Oncology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
7. Department of Research & Development, Netherlands Comprehensive Cancer Organization, Utrecht, The Netherlands