1. Department of Otorhinolaryngology; Gulhane Military Medical Academy Haydarpasa Training Hospital; Istanbul Turkey
2. Department of Otolaryngology-Head and Neck Surgery; Medical University of South Carolina; Charleston South Carolina U.S.A.
3. Department of Pathology, Gulhane Military Medical Academy; Haydarpasa Training Hospital; Istanbul Turkey
4. Department of Otorhinolaryngology; Erzincan Military Hospital; Erzincan Turkey
5. Department of Public Health; Gulhane Military Medical Academy; Ankara Turkey