1. Yunus Emre State Hospital, Department of Otorhinolaryngology, Eskisehir, Turkey
2. Kırıkkale University, Medical Faculty, Department of Otorhinolaryngology, Kırıkkale, Turkey
3. Eskisehir Osmangazi University, Medical Faculty, Department of Otorhinolaryngology, Eskisehir, Turkey
4. Eskisehir Osmangazi University, Medical Faculty, Department of Histology, Eskisehir, Turkey