1. Hendek State Hospital, 54300 Sakarya, Turkey
2. Ankara Research and Training Hospital, Ministry of Health, 06340 Ankara, Turkey
3. Faculty of Medicine, Adiyaman University, Ear Nose Throat Clinic, 02200 Adiyaman, Turkey
4. Faculty of Medicine, Balikesir University, Ear Nose Throat Clinic, 10145 Balikesir, Turkey