1. Department of Cardiology; Kafkas University Medical Faculty; Kars Turkey
2. Department of Cardiology; Kars Harakani State Hospital; Kars Turkey
3. Department of Internal medicine; Kars Harakani State Hospital; Kars Turkey
4. Department of Cardiology; Diyarbakır Education and Research Hospital; Diyarbakır Turkey
5. Department of Cardiology; Midyat State Hospital; Mardin Turkey
6. Department of Cardiology; Ataturk University Medical Faculty; Erzurum Turkey