1. Department of Research, Netherlands Comprehensive Cancer Organisation (IKNL), Utrecht, The Netherlands
2. Department of Surgery, Academic Medical Center AMC, Amsterdam, The Netherlands
3. Department of Surgery, Catharina Hospital, Eindhoven, The Netherlands
4. Department of Hepato-Pancreato-Biliary Surgery & Liver Transplantation, University Medical Center Groningen, Groningen, The Netherlands
5. Department of Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
6. Department of Public Health, Erasmus MC University Medical Center, Rotterdam, The Netherlands.