1. Division of Otorhinolaryngology Department of Biotechnology and Life Sciences University of Insubria‐Varese, ASST Sette Laghi, Ospedale di Circolo Varese Italy
2. Head and Neck Surgery & Forensic Dissection Research Center, Department of Biotechnology and Life Sciences University of Insubria Varese Italy
3. Division of Otorhinolaryngology Department of Surgical Specialties ASST Sette Laghi, Ospedale di Circolo Varese Italy
4. Division of Neurological Surgery Department of Biotechnology and Life Sciences University of Insubria‐Varese, ASST Sette Laghi, Ospedale di Circolo Varese Italy
5. Division of Neurological Surgery ASST Papa Giovanni XXIII Bergamo Italy
6. Division of Neurological Surgery Azienda Ospedaliero Universitaria Ospedali Riuniti Ancona Italy
7. Department of Radiation Oncology Department of Translational Medicine University Hospital Maggiore della Carità, Novara, Italy University of Piemonte Orientale Novara Italy
8. Radiotherapy Unit Department of Neurosurgery Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico C. Besta Milan Italy
9. Department of Otorhinolaryngology ASST Ovest Milanese, Ospedale Nuovo di Legnano, Legnano (Milan) Milan Italy
10. Department of Neurosurgery Università Cattolica del Sacro Cuore Rome Italy
11. Division of Maxillo‐Facial Surgery Department of Biomedical, Surgical and Dental Sciences, San Paolo Hospital University of Milan Milan Italy