1. Department of Surgery, Amphia Hospital, Breda, The Netherlands.
2. Department of Amphia Academy, Amphia Hospital, Breda, The Netherlands.
3. Department of Surgery, Catharina Hospital, Eindhoven, The Netherlands.
4. Department of Surgery, Maastricht University, Maastricht, The Netherlands.
5. Department of Epidemiology, Faculty of Health Medicine and Life Sciences, Research Institute Growth and Development (GROW), Maastricht University, Maastricht, The Netherlands.
6. Research Department, Comprehensive Cancer Centre the Netherlands, Eindhoven, The Netherlands.