1. Department of Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
2. Department of Surgery, Reinier de Graaf Gasthuis, Delft, The Netherlands
3. Department of Statistics and Education, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
4. Department of Genetics, UMC Groningen, University of Groningen, Groningen, the Netherlands
5. Department of Pathology, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
6. Department of Radiology, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands