1. Department of Cardiology, Süreyyapaşa Chest Diseases and Thoracic Surgery Training and Research Hospital, İstanbul, Turkey
2. Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Education Research Hospital, İstanbul, Turkey
3. Department of Cardiology, Kartal Koşuyolu Heart Training and Research Hospital, İstanbul, Turkey
4. Department of Biostatistics, Faculty of Medicine, Nisantaşı University, İstanbul, Turkey