1. Department of Otorhinolaryngology, Faculty of Medicine, Dokuz Eylül University, 35220 İzmir, Türkiye
2. Department of Public Health, Faculty of Medicine, Dokuz Eylül Universtiy, 35220 İzmir, Türkiye
3. Department of Otorhinolaryngology, Faculty of Medicine, Osmangazi University, 26040 Eskişehir, Türkiye
4. Department of Otorhinolaryngology, Faculty of Medicine, Çukurova University, 01330 Adana, Türkiye
5. Department of Biostatistics and Medical Informatics, Faculty of Medicine, Dokuz Eylül Universtiy, 35220 İzmir, Türkiye
6. Department of Otorhinolaryngology, Faculty of Medicine, Başkent University, 06790 Ankara, Türkiye