1. Department of Speech-Language Pathology and Audiology, University of Pretoria, Pretoria, South Africa;
2. Hearing Research Clinic Non-Profit Company, Durban, South Africa;
3. Ear Sciences Centre, The University of Western Australia, Nedlands, Australia;
4. Ear Science Institute Australia, Subiaco, Australia;
5. Oticon Medical, Oticon A/S, Copenhagen, Denmark;
6. Department of Behavioral Sciences and Learning, Linköping University, Linköping, Sweden