Oguzhan Yucel1, Hasan Yucel2, Ali Zorlu3. 1. Samsun Education and Research Hospital, Department of Cardiology, Samsun, Turkey. Electronic address: droyucelcardio@gmail.com. 2. Cumhuriyet University Medical School, Department of Cardiology, Sivas, Turkey. Electronic address: drhasanyucel@hotmail.com. 3. Cumhuriyet University Medical School, Department of Cardiology, Sivas, Turkey. Electronic address: dralizorlu@gmail.com.