1. Department of Otorhinolaryngology and Head and Neck Surgery, University Medical Center Utrecht, The Netherlands
2. Brain Center Rudolf Magnus, University of Utrecht, Utrecht, The Netherlands
3. Department of Experimental Surgery, McGill University, Montreal, Quebec, Canada
4. Medizinische Hochschule Hannover, Deutsches HörZentrum Hannover der HNO-Klinik, Hannover, Germany
5. The Midlands Hearing Implant Program – Children’s Service, Birmingham Children’s Hospital NHS Foundation Trust, Birmingham, UK
6. Pediatric Otolaryngology and Cochlear Implantation, Dona Estefânia Children’s Hospital, Lisbon, Portugal
7. Otology and Cochlear Implant Unit, Santobono-Pausilipon Children’s Hospital, Naples, Italy
8. Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Antwerp, Belgium
9. University of Antwerp, Antwerp, Belgium