1. Department of Otolaryngology—Head and Neck Surgery, Rehabilitation Center for Communication Disorders Antwerp University Hospital Antwerp Belgium
2. Department of ENT, Head and Neck Surgery and Communication Disorders, Faculty of Medicine and Health Sciences University of Antwerp Antwerp Belgium
3. Department of Radiation Oncology Ghent University Hospital Ghent Belgium
4. Faculty of Medicine and Health Sciences, Department of Human Structure and Repair Ghent University Ghent Belgium
5. Department of Head and Neck Surgery Ghent University Hospital Ghent Belgium