1. Center for Tissue Engineering, University of Massachusetts Medical Center, Worcester, Massachusetts.
2. Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Schleswig-Holstein, Campus Luebeck, Luebeck, Germany.
3. Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts.
4. Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts.
5. Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts.
6. Department of Anesthesiology, Brigham and Women's Hospital, Boston, Massachusetts.
7. Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York.