1. Department of Otorhinolaryngology and Head & Neck Surgery, University Medical Center Utrecht, Utrecht, The Netherlands;
2. Department Head and Neck Surgical Oncology, UMC Cancer Center, University Medical Center Utrecht, Utrecht, The Netherlands;
3. Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands;
4. Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands;
5. Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands