1. Department of Value Based Healthcare St Antonius Hospital Nieuwegein The Netherlands
2. Department of Surgery St Antonius Hospital Nieuwegein The Netherlands
3. Department of Surgery Meander MC Amersfoort The Netherlands
4. Radboud Institute for Health Sciences Scientific Center for Quality of Healthcare (IQ Healthcare) Radboud University Medical Center Nijmegen The Netherlands
5. Cancer Center Utrecht University Medical Center Utrecht University Utrecht The Netherlands
6. Department of Surgery Martini Hospital Groningen The Netherlands
7. Department of Surgery University Medical Center Groningen Groningen The Netherlands