1. Department of Neurology, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
2. Department of Otolaryngology, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
3. Department of Audiology, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
4. Department of Algology, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey