1. Department of Otolaryngology, Bağcılar Training and Research Hospital, İstanbul, Turkey

2. Department of Otolaryngology, Kırıkkale University School of Medicine, Kırıkkale, Turkey

3. Department of Otolaryngology, Ankara Oncology Training and Research Hospital, Ankara, Turkey

4. Department of Pathology, Ankara Oncology Training and Research Hospital, Ankara, Turkey