1. Otolaryngology Department University of Perugia Perugia Italy
2. Engineering Department Highland Instruments Cambridge Massachusetts U.S.A.
3. Radiology, Oncology, and Anatomopathological Department University La Sapienza Rome Italy
4. Organ of Sense Department University La Sapienza of Rome Rome Italy
5. Department of Otolaryngology‐Head and Neck Surgery University of Michigan Medical School Ann Arbor Michigan U.S.A.