Near East University, Faculty of Medicine, Department of Otorhinolaryngology, Nicosia, Northern Cyprus
2.Near East University, Faculty of Medicine, Department of Endocrinolgy and Metabolism, Nicosia, Northern Cyprus
3.Karadeniz Technical University, Faculty of Medicine, Department of Otorhinolaryngology, Trabzon, Turkey
4.Hizmet Hospital, Department of Otorhinolaryngology, Istanbul, Turkey
5.Ankara Ataturk Education and Research Hospital, Department of Otorhinolaryngology, Ankara, Turkey