1. Department of Otorhinolaryngology, Bezmialem Vakif University, Istanbul, Turkey.
2. Department of Otorhinolaryngology, Bayrampasa State Hospital, Istanbul, Turkey.
3. Department of Biochemistry, Bezmialem Vakif University, Istanbul, Turkey.
4. Department of Audiology, Bezmialem Vakif University, Faculty of Health Sciences, Istanbul, Turkey.