1. Department of Cardiology, Hisar Intercontinental Hospital, Istanbul, Turkey.
2. Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Education Research Hospital, Istanbul, Turkey.
3. Department of Cardiology, Ataturk University Medical School, Erzurum, Turkey.
4. Department of Cardiology, Kosuyolu Education Research Hospital, Istanbul, Turkey.
5. Department of Biostatistics and Cardiology, Nisantasi University Medical School, Istanbul, Turkey.