1. Auditory Implant Service, University of Southampton, Southampton, UK
2. Cwm Taf Morgannwg University Health Board, Wales, UK
3. The Richard Ramsden Centre for Hearing Implants, Manchester University NHS Foundation Trust, Hannover, Germany
4. Mid and South Essex NHS Foundation Trust, Southend, UK
5. Northeast Regional Cochlear Implant Programme, Middlesbrough, UK
6. Northern Devon Healthcare NHS Trust, Barnstaple, UK
7. St George’s University Hospitals NHS Foundation Trust, London, UK