1. Department of Otorhinolaryngology–Head and Neck Surgery Radboud Institute for Health SciencesRadboud University Medical Center Nijmegen the Netherlands
2. Department of Radiology and Nuclear Medicine Radboud Institute for Health SciencesRadboud University Medical Center Nijmegen the Netherlands
3. Scientific Center for Quality of Healthcare Radboud Institute for Health SciencesRadboud University Medical Center Nijmegen the Netherlands
4. Department of Oral and Maxillofacial Surgery Radboud Institute for Health SciencesRadboud University Medical Center Nijmegen the Netherlands
5. Department of Pathology Radboud Institute for Health SciencesRadboud University Medical Center Nijmegen the Netherlands
6. Department of Medical Oncology Radboud Institute for Health SciencesRadboud University Medical Center Nijmegen the Netherlands
7. Department of Radiation Oncology Radboud Institute for Health SciencesRadboud University Medical Center Nijmegen the Netherlands