1. ENT Clinic, Head and Neck Department Azienda Sanitaria Universitaria Integrata di Trieste Trieste Italy
2. Department of Otolaryngology Mayo Clinic Phoenix Phoenix Arizona
3. Head and Neck Surgery Section Hospital General Universitario Gregorio Marañón Madrid Spain
4. UCO Pathological Anatomy and Histopathology Unit Azienda Sanitaria Universitaria Integrata di Trieste Trieste Italy
5. Biostatistics Unit‐Department of Medical, Surgical and Health Science Azienda Sanitaria Universitaria Integrata di Trieste Trieste Italy