1. Department of Otorhinolaryngology and Head and Neck Surgery, Diskapi Yildirim Beyazit Research and Training Hospital, Ankara, Turkey;
2. Department of Otorhinolaryngology and Head and Neck Surgery, Faculty of Medicine, Ankara Yildirim Beyazit University, Bilkent Campus, Ankara, Turkey;
3. Department of Medical Biology, Faculty of Medicine, Ankara Yildirim Beyazit University, Bilkent Campus, Ankara, Turkey;
4. Department of Otorhinolaryngology and Head and Neck Surgery, University of Health Sciences, Diskapi Yildirim Beyazit Research and Training Hospital, Ankara, Turkey