1. Cochrane ENT; Nuffield Department of Surgical Sciences, University of Oxford; Oxford UK
2. Department of Otolaryngology; Brighton and Sussex University Hospitals NHS Trust; Brighton UK
3. Child Health Division; Menzies School of Health Research, Charles Darwin University; Darwin Australia
4. Department of Otolaryngology; Perth Children's Hospital; Perth Australia
5. School of Paediatrics and Child Health; The University of Western Australia; Perth Australia
6. Cochrane UK; Oxford UK
7. evidENT, Ear Institute; University College London; London UK
8. Telethon Kids Institute; The University of Western Australia; Perth Australia