1. Department of Head and Neck Oncology and Surgery, Netherlands Cancer Institute–Antoni van Leeuwenhoek, Amsterdam, the Netherlands
2. Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
3. Department of Biomechanical Engineering, University of Twente, Enschede, the Netherlands
4. Institute of Phonetic Sciences, University of Amsterdam, Amsterdam, the Netherlands
5. Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Center, Amsterdam, the Netherlands