1. Department of Special Needs Education University of Oslo Oslo Norway
2. School of Occupational Therapy, Social Work and Speech Pathology Curtin University PerthAustralia
3. School of Health and Social Development Faculty of Health Deakin University Geelong Australia
4. Department of Otorhinolaryngology and Head and Neck Surgery Leiden University Medical Center Leiden the Netherlands
5. Department of Linguistics Macquarie University Sydney Australia
6. Department of Speech & Language Therapy Technological Educational Institute of Western Greece Patras Greece
7. Department of Occupational Therapy Faculty of Health Sciences The University of Sydney Sydney Australia