1. Department of Sensory OrgansUniversity “Sapienza” Rome Italy
2. Otolaryngology–Head and Neck and Oral Surgery UnitMorgagni Pierantoni Hospital Forlì Italy
3. Department of Oral and Maxillofacial SciencesUniversity “Sapienza” Rome Italy
4. Department of ENT and AudiologyUniversity of Ferrara Ferrara Italy
5. Department of OtolaryngologyAsia Sleep Centre Paragon Singapore
6. Department of OtolaryngologyWestern University London Ontario Canada