1. Medical Faculty, Department of Otorhinolaryngology; Osmangazi University; Eskisehir Turkey
2. Department of Otorhinolaryngology/Head and Neck Surgery; Haydarpasa Numune Research and Education Hospital; Istanbul Turkey
3. Center for Drug Research and Development and Pharmacokinetic Applications; Ege University; Izmir Turkey
4. Department of Otorhinolaryngology/Head and Neck Surgery; Tokat State Hospital; Tokat Turkey