1. Nose Clinic, Rhinosurgery Unit c/o Check-Up Day-Surgery
2. University Hospital of Salerno
3. Organ of Sense Department, La Sapienza University of Rome
4. Head and Neck Department, Neurosciences, Reproductive, and Odontostomatological Science, University Federico II
5. Department of Otolaryngology-Head and Neck Surgery, University of Michigan
6. Otolaryngology Department, University of Perugia.