1. Department of Surgery, Academic Medical Centre, Amsterdam, The Netherlands
2. Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
3. Department of Pathology, St Antonius Hospital, Nieuwegein, The Netherlands
4. Department of Pathology, Academic Medical Centre, Amsterdam, The Netherlands
5. Department of Surgery, Reinier de Graaf Gasthuis, Delft, The Netherlands
6. Department of Pathology, Reinier de Graaf Gasthuis, Delft, The Netherlands
7. Department of Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands
8. Department of Surgery, Netherlands Cancer Institute, Amsterdam, The Netherlands