1. Department of Otorhinolaryngology & Head and Neck Surgery, European Institute for ORL-HNS, GZA Sint-Augustinus, Wilrijk, Belgium
2. Department of Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Ghent University, Belgium
3. Department of Speech-Language Therapy and Audiology, University College Ghent, Belgium
4. School of Logopedics, Faculty of Psychology and Educational Sciences, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
5. Phonanium, Lokeren, Belgium
6. Department of Maxillo-Cranio-Facial Surgery, Craniofacial and Cleft Lip & Palate Team GZA Sint-Augustinus, Wilrijk, Belgium
7. Face Ahead, Private Maxillo-Cranio-Facial Surgery Clinic, Antwerp, Belgium