1. Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Frankfurt am Main, Goethe University, Frankfurt am Main, Germany.
2. Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts.
3. Eaton-Peabody Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts.
4. Institute of Veterinary Anatomy, Histology, and Embryology, Justus-Liebig University Giessen, Giessen, Germany.
5. Program in Speech and Hearing Bioscience and Technology, Division of Health Sciences and Technology, Harvard and MIT, Cambridge, Massachusetts.