1. Department of Biomedical Sciences Humanitas University Milan Italy
2. Otorhinolaryngology Unit IRCCS Humanitas Research Hospital Milan Italy
3. Otorhinolaryngology Head and Neck department Son Espases University Hospital Palma Spain
4. Department of Otolaryngology—Head and Neck Surgery AdventHealth Orlando Celebration Florida USA
5. Department of ‘Organi di Senso’ University “Sapienza” Rome Italy
6. Rotger Clinic Quiron Salud Palma de Mallorca Spain
7. Unit of Otorhinolaryngology, Giuseppe Fornaroli Hospital, ASST Ovest Milanese Milan Italy
8. Department of Medical Science (DIMES) University of Genoa Genoa Italy
9. Functional Unit of Head and Neck Tumors, Hospital Clínic Barcelona Spain
10. Otorhinolaryngology Department Hospital Clínic Barcelona Spain
11. Unit of Otorhinolaryngology, ASST Grande Ospedale Metropolitano Niguarda Milan Italy