1. Department of Otorhinolaryngology; Ministry of Health Ankara Training and Research Hospital; Ankara Turkey
2. Department of Nuclear Medicine; Ministry of Health Ankara Training and Research Hospital; Ankara Turkey
3. Department of Biophysics and Gazi Non-Ionizing Radiation Protection Center; Gazi University Faculty of Medicine; Ankara Turkey
4. Department of Histology and Embryology; Hacettepe University Faculty of Medicine; Ankara Turkey