1. Department of Clinical and Experimental Medicine University of Foggia Foggia Italy
2. Pathology Unit Istituto Nazionale per lo Studio e la Cura dei Tumori Fondazione G. Pascale IRCCS Naples 80131 Italy
3. ENT Department University of Verona Verona Italy
4. Multidisciplinary Department of Medical‐Surgical and Odontostomatological Specialties Second University of Naples Naples Italy