1. Department of Otolaryngology, School of Medicine, Atatürk University, Erzurum

2. Department of Radiation Oncology, Erzurum Numune Hospital, Erzurum

3. Department of Pathology, School of Medicine, Atatürk University, Erzurum

4. Department of Pathology, School of Medicine, Akdeniz University, Antalya