1. Department of Pathology; Radboud University Medical Centre; Nijmegen the Netherlands
2. Department of Surgery; Catharina Hospital Eindhoven; Eindhoven the Netherlands
3. Pathology and Tumour Biology; Leeds Institute of Cancer and Pathology; St James's University Hospital; University of Leeds; Leeds UK
4. Department of Gastroenterology and Hepatology; Netherlands Cancer Institute; Amsterdam the Netherlands
5. Department of Radiotherapy; Leids University Medical Centre; Leiden the Netherlands
6. Department of Surgery; Erasmus MC Cancer Institute; Rotterdam the Netherlands
7. Pathology and Medical Microbiology; Eindhoven the Netherlands
8. Department of Surgery; Radboud University Medical Centre; Nijmegen the Netherlands
9. Department of Surgery; Maastricht University Medical Centre; Maastricht the Netherlands