1. University of Southampton Auditory Implant Service, SO17 1BJ, UK
2. Hearing Implant Centre, Guy's and St. Thomas NHS Foundation Trust, London, UK
3. Centre for Craniofacial and Regenerative Biology, King's College London, London, UK
4. West of England Hearing Implant Programme, University Hospitals Bristol and Weston NHS Foundation Trust, UK
5. Auditory Implant Department, Royal National ENT & Eastman Dental Hospitals, University College London Hospitals NHS Foundation Trust, UK
6. Midlands Hearing Implant Programme (Adult service), University Hospitals Birmingham NHS Foundation Trust, UK
7. Emmeline Centre for Hearing Implants, Cambridge University Hospitals NHS Trust, UK
8. Scottish Cochlear Implant Program, Crosshouse Hospital, Kilmarnock, UK
9. North Wales Auditory Implant Service, Betsi Cadwaladr University Health Board, Bodelwyddan, UK
10. Cochlear Implant Programme, Great Ormond Street Hospital For Children NHS Foundation Trust, London, UK
11. University of Ottawa Auditory Implant Centre, Ottawa, Canada
12. Auditory Implant Centre, Belfast Health and Social Care Trust, UK