1. Department of Otolaryngology-Head & Neck Surgery, University of Kansas Medical Center, Kansas City, KS
2. Auditory Development and Restoration Program, National Institute on Deafness and Other Communication Disorders, Bethesda, MD
3. Department of Otolaryngology and Cluster of Excellence of the German Research Foundation (DFG; “Deutsche Forschungsgemeinschaft”) “Hearing4all,” Hannover Medical School, Hannover, Germany
4. Department of Otolaryngology–Head and Neck Surgery, Georgetown University Medical Center, Washington, DC.