1. Department of Medical, Surgical and Health Sciences, Section of Otolaryngology, University of Trieste, Strada di Fiume 447, 34149 Trieste, Italy
2. Unit of Cancer Epidemiology, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Via F. Gallini 2, 33081 Aviano, Italy
3. Immunology and Molecular Oncology Diagnostics, Veneto Institute of Oncology IOV-IRCCS, Via Gattamelata 64, 35128 Padova, Italy
4. Unit of Immunopathology and Cancer Biomarkers, Department of Translational Research, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Via F. Gallini 2, 33081 Aviano, Italy
5. Unit of Otolaryngology, AULSS 2 Marca Trevigiana, Piazzale dell’Ospedale 1, 31100 Treviso, Italy
6. Unit of Otolaryngology, General Hospital “S. Maria degli Angeli”, Via Montereale 24, 33170 Pordenone, Italy
7. Department of Radiation Oncology, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Via F. Gallini 2, 33081 Aviano, Italy
8. Department of Medical, Surgical and Health Sciences, Section of Pathology, University of Trieste, Strada di Fiume 447, 34149 Trieste, Italy
9. Department of Medicine, Section of Pathology, University of Padova, via Giustiniani 2, 35128 Padova, Italy