1. Department of Research and Development, Netherlands Comprehensive Cancer Organization, Utrecht, the Netherlands
2. Department of Radiation Oncology (Maastro), GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, the Netherlands
3. Department for Health Evidence, Radboud University Medical Centre, Nijmegen, the Netherlands
4. Department of Surgery, Catharina Hospital, Eindhoven, the Netherlands