Gökhan Çetinkal1, Cüneyt Koçaş2, Betül Balaban Koçaş1, Şükrü Arslan2, Okay Abacı2, Osman Şükrü Karaca2, Yalçın Dalgıç2, Özgür Selim Ser2, Kudret Keskin1, Ahmet Yıldız2, Sait Mesut Doğan21Department of Cardiology, Şişli Hamidiye Etfal Training and Research Hospital; İstanbul-Turkey 2Department of Cardiology, İstanbul University Institute of Cardiology; İstanbul-Turkey