1. Department of Special Needs Education, Faculty of Educational Sciences, University of Oslo, Norway
2. School of Occupational Therapy, Social Work and Speech Pathology, Faculty of Health Sciences, Curtin University, Perth, Australia
3. Department of Otorhinolaryngology and Head and Neck Surgery, Leiden University Medical Centre, the Netherlands
4. Department of Social Work, Education and Community Wellbeing, Faculty of Health and Life Sciences, Northumbria University, Newcastle, United Kingdom
5. Department of Education, University of Helsinki, Finland
6. Open University, University of Helsinki, Finland