1. Department of Audiology, Faculty of Health Sciences, Gazi University, Ankara, Turkey
2. Department of Otolaryngology & Subdivision of Audiology, Prof. N. Akyildiz Hearing Speech, Voice and Balance Disorders Center, Faculty of Medicine, Gazi University, Ankara, Turkey
3. Department of Otorhinolaryngology, Faculty of Medicine, Muğla Sıtkı Koçman University, Muğla, Turkey