1. Department of Otorhinolaryngology—Head and Neck Surgery, Istanbul Medeniyet Üniversity Education and Research Hospital, İstanbul, Turkey
2. Department of Otorhinolaryngology—Head and Neck Surgery, Health Sciences University, Umraniye Education and Research Hospital, İstanbul, Turkey
3. Department of Otorhinolaryngology—Head and Neck Surgery, Faculty of Medicine, Marmara University, İstanbul, Turkey