1. Department of Otorhinolaryngology–Head and Neck Surgery, G. Papanikolaou General Hospital, Thessaloniki, Greece
2. First Academic Department of Dermatology and Venereology, School of Medicine, Aristotle University, Thessaloniki, Greece
3. Second Academic Department of Otorhinolaryngology–Head and Neck Surgery, Papageorgiou Hospital, Aristotle University of Thessaloniki, Greece