1. Department of Surgery, Máxima Medical Centre, Veldhoven, Eindhoven, the Netherlands
2. Department of Surgery, Maastricht University Medical Centre, Maastricht, the Netherlands
3. Department of Surgery, Radboud University Medical Centre, Nijmegen, the Netherlands
4. Netherlands Comprehensive Cancer Organisation, Eindhoven, the Netherlands
5. Department of Pathology, PAMM Laboratory for Pathology and Medical Microbiology, Eindhoven, the Netherlands