1. Telethon Kids Institute, Perth, Western Australia, Australia
2. Telethon Speech & Hearing, Perth, Western Australia, Australia
3. Macquarie University, Sydney, New South Wales, Australia
4. Curtin University, Perth, Western Australia, Australia
5. Perth Children's Hospital, Child and Adolescent Health Service, Western Australia, Australia
6. The University of Western Australia, Perth, Australia
7. Department of Education, School of Special Education Needs: Sensory, Perth, Western Australia, Australia
8. Ear Science Institute, Perth, Western Australia, Australia
9. Department of Speech-Language Pathology and Audiology, University of Pretoria, South Africa