1. Department of Head and Neck Oncology and Surgery; The Netherlands Cancer Institute-Antoni van Leeuwenhoek; Amsterdam The Netherlands
2. Department of Clinical Physics and Instrumentation; The Netherlands Cancer Institute-Antoni van Leeuwenhoek; Amsterdam The Netherlands
3. Department of Biometrics; The Netherlands Cancer Institute-Antoni van Leeuwenhoek; Amsterdam The Netherlands
4. Institute of Phonetic Sciences (ACLC); University of Amsterdam; The Netherlands
5. Department of Oral-Maxillofacial Surgery; Academic Medical Center, University of Amsterdam; The Netherlands