Department of Otorhinolaryngology, Okmeydanı Training and Research Hospital, İstanbul, Turkey
2.Department of Otorhinolaryngology and Head&Neck Surgery, Meram Medical Faculty, Selcuk University
3.Akçaabat Haçkale Baba State Hospital, Trabzon, Turkey
4.Department of Otolaryngology, Medicine Faculty of İstanbul University, İstanbul, Turkey