1. Department of Head-and-Neck Oncology and Surgery, The Netherlands Cancer Institute, Amsterdam, The Netherlands
2. Amsterdam Center of Language and Communication, University of Amsterdam, Amsterdam, The Netherlands
3. Department of Otorhinolaryngology/Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
4. Department of Maxillofacial Surgery, Amsterdam University Medical Center, Amsterdam, The Netherlands