1. Department of Oral and Maxillofacial Surgery Radboud University Medical Centre Nijmegen The Netherlands
2. Department of Oral and Maxillofacial Surgery University Hospital Monklands Airdrie UK
3. Netherlands Comprehensive Cancer Organisation Utrecht The Netherlands
4. Department for Health Evidence Radboud University Medical CentreRadboud Institute for Health Sciences Nijmegen The Netherlands
5. Department of Medical Oncology GROW‐School for Oncology and Developmental Biology Maastricht University Medical Center+ Maastricht The Netherlands