Mehmet Ali Astarcioglu1, Mehmet Ozkan2, Ozan Gursoy2, Altug Tuncer3. 1. Department of Cardiology, Koşuyolu Kartal Heart Training and Research Hospital, Istanbul, Turkey. maliastarcioglu@hotmail.com. 2. Department of Cardiology, Koşuyolu Kartal Heart Training and Research Hospital, Istanbul, Turkey. 3. Department of Cardiovascular Surgery, Koşuyolu Kartal Heart Training and Research Hospital, Istanbul, Turkey.