1. Department of Pathology Radboud University Medical Centre Nijmegen The Netherlands
2. Department of Pathology St. Vincent's University Hospital Dublin Ireland
3. Department of Surgery St. Vincent's University Hospital Dublin Ireland
4. Department of Surgery Leiden University Medical Centre Leiden The Netherlands
5. Department of Radiotherapy Leiden University Medical Centre Leiden The Netherlands
6. Department of Oncology University Medical Centre Groningen Groningen The Netherlands
7. Department of Pathology Erasmus Medical Centre Rotterdam The Netherlands
8. Department of Surgical Oncology Erasmus Medical Centre Rotterdam The Netherlands