1. Department of Oral Health Sciences—Orthodontics, KU Leuven and Dentistry University Hospitals Leuven Leuven Belgium
2. Department Special Needs Education University of Oslo Oslo Norway
3. School of Occupational Therapy, Social Work and Speech Pathology, Faculty of Health Sciences Curtin University Perth Western Australia Australia
4. Department of Otorhinolaryngology and Head and Neck Surgery Leiden University Medical Centre Leiden The Netherlands
5. University of Bordeaux, CNRS, MCC, PACEA, UMR 5199 Pessac France