1. Department of Surgery; Royal Darwin Hospital; Darwin Northern Territory Australia
2. Ear Science Institute Australia; Subiaco Western Australia Australia
3. Ear Sciences Centre; School of Surgery; University of Western Australia; Subiaco Western Australia Australia
4. Department of Speech-Language Pathology and Audiology; University of Pretoria; Pretoria South Africa
5. Busselton Population Medical Research Institute; Busselton Western Australia Australia
6. School of Population Health; University of Western Australia; Nedlands Australia
7. School of Medicine and Pharmacology; University of Western Australia; Fremantle Hospital; Fremantle Western Australia Australia
8. Sir Charles Gairdner Hospital; Nedlands Western Australia Australia