1. Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam University of Amsterdam and Vrije Universiteit Amsterdam Amsterdam the Netherlands
2. Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Centre, location Academic Medical Center (AMC), and Academic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam and Vrije Universiteit Amsterdam Amsterdam the Netherlands
3. Department of Otorhinolaryngology, Head and Neck Surgery OLVG Amsterdam the Netherlands
4. Department of Oral and Maxillofacial Surgery OLVG Amsterdam the Netherlands
5. Department of Otorhinolaryngology, Head and Neck Surgery University of Antwerp Antwerpen Belgium