Emrah Bayram1, Macit Kalçık2, Mahmut Yesin1, Mehmet Özkan3. 1. Department of Cardiology, Kartal Kosuyolu Yuksek Ihtisas Training and Research Hospital, İstanbul, Turkey. 2. Department of Cardiology, İskilip Atıf Hoca State Hospital, Çorum, Turkey. 3. Department of Cardiology, Kars Kafkas University Faculty of Medicine, Kars, Turkey.