1. Department of Head and Neck Oncology and Surgery The Netherlands Cancer Institute Amsterdam The Netherlands
2. Biometrics Department The Netherlands Cancer Institute Amsterdam The Netherlands
3. Department of Head and Neck Oncology and Surgery Amsterdam UMC Amsterdam The Netherlands
4. Department of Head and Neck Surgical Oncology University Medical Center Utrecht The Netherlands
5. Institute of Phonetic Sciences Amsterdam Center of Language and Communication, University of Amsterdam Amsterdam The Netherlands
6. Department of Oral and Maxillofacial Surgery Academic Medical Center Amsterdam The Netherlands
7. Department of Clinical Epidemiology, Biostatistics, and Bioinformatics Amsterdam UMC Amsterdam The Netherlands