ENT Department, Dr. Lütfi Kirdar Kartal Teaching and Research Hospital, İstanbul- Turkey
2.İzmir Atatürk Research and Training Hospital, Ministry of Health, İZMİR-TURKEY Department of Otorhinolaryngology and Head and Neck Surgery
3.Department of Otorhinolaryngology and Head and Neck Surgery Etimesgut Military Hospital , ANKARA-TURKEY
4.Department of Internal Medicine, Afyon Kocatepe University, Faculty of Medicine, Afyonkarahisar, Turkey
5.Izmir Ataturk Training and Research Hospital, Izmir, Turkey
6.Department of Otorhinolaryngology and Head and Neck Surgery İzmir Atatürk Research and Training Hospital, Ministry of Health, İZMİR-TURKEY