1. Erasmus MC-University Medical Center; Department of Gastroenterology and Hepatology; Rotterdam The Netherlands
2. Department of Surgical Oncology; Erasmus MC-University Medical Center; Erasmus MC Cancer Institute; Rotterdam The Netherlands
3. Department of Tumor Immunology; Radboud University Medical Center; Nijmegen The Netherlands
4. Department of Pathology; Erasmus MC-University Medical Center; Rotterdam The Netherlands
5. Department of Medical Oncology; Erasmus MC-University Medical Center; Erasmus MC Cancer Institute; Rotterdam The Netherlands