1 Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, 13 Tıbbiye Cad Selimiye, Üsküdar/İstanbul, Turkey.
2 Department of Cardiology, School of Medicine, Marmara University, Fevzi Çakmak, Muhsin Yazıcıoğlu Cd No:10, Pendik/İstanbul, Turkey.