1. Department of Otorhinolaryngology Clinic Mardin Public Hospital Mardin Turkey
2. Department of Otorhinolaryngology Clinic Memorial Diyarbakır Hospital Diyarbakir Turkey
3. Department of Otorhinolaryngology Clinic Medical Park Hospital Gaziantep Turkey
4. Department of Otorhinolaryngology Clinic Dicle University School of Medicine Diyarbakır Turkey