1. Department of Otorhinolaryngology-Head and Neck Surgery; Ankara Turkey
2. Department of Otorhinolaryngology-Head and Neck Surgery, Ministry of Health; Atatürk Training and Research Hospital; Ankara Turkey
3. Department of Pathology; Harran University Faculty of Veterinary Medicine; Ankara Turkey
4. Department of Anesthesiology , Ministry of Health; Ankara Training and Research Hospital; Ankara Turkey