1. Department of Otolaryngology–Head and Neck Surgery, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio, USA
2. Department of Otolaryngology–Head and Neck Surgery, School of Medicine, Dicle University, Diyarbakir, Turkey
3. Department of Otolaryngology–Head and Neck Surgery, School of Medicine, Dumlupinar University, Kutahya, Turkey