1. Department of Otorhinolaryngology-Head and Neck Surgery; Institute for Health Sciences; Radboud University Medical Centre Nijmegen; Nijmegen The Netherlands
2. Department of Rehabilitation; Institute for Health Sciences; Radboud University Medical Centre Nijmegen; Nijmegen The Netherlands
3. Department of Pediatric Neurology; Institute for Health Sciences; Radboud University Medical Centre Nijmegen; Nijmegen The Netherlands