1. Department of Diagnostic Clinical and Public Health, Otorhinolaryngology-Head and Neck Surgery, Audiology Program, University of Modena and Reggio Emilia, Modena, Italy
2. Department of Otolaryngology, Hospital of Modena, Modena, Italy
3. West Barton, Horwood, Bideford, Devon, United Kingdom of Great Britain and Northern Ireland
4. Department of Otolaryngology, Head and Neck Surgery, Stanford University School of Medicine, Lausanne, Switzerland