1. Department of Operating Rooms Radboud Institute of Health Sciences, Radboud University Medical Centre Nijmegen The Netherlands
2. Department of Otolaryngology Radboud Institute of Health Sciences, Radboud University Medical Centre Nijmegen The Netherlands
3. Academic Alliance Skull Base Pathology, Radboud University Medical Centre & Maastricht University Medical Centre Nijmegen & Maastricht The Netherlands
4. Department of Otorhinolaryngology Maastricht University Medical Centre Maastricht The Netherlands
5. Department of Health Evidence Radboud Institute of Health Sciences, Radboud University Medical Centre Nijmegen The Netherlands