1. Department of Diagnostics and Public Health, Section of Pathology, University of Verona, Verona, Italy
2. Division of Pathology, Central Hospital Bolzano, Bolzano, Italy
3. Department of Surgery, Dentistry, Gynecology, and Pediatrics, Division of Otorhinolaryngology, University and Hospital Trust of Verona, Verona, Italy
4. Department of Public Health, University of Naples Federico II, Naples, Italy
5. Department of Pathology and Diagnostics, Division of Pathology, University and Hospital Trust of Verona, Verona, Italy