1. Department of Cardiovascular Surgery, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey, ugurfilizcan@yahoo.com
2. Department of Cardiovascular Surgery, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey
3. Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey
4. Duzce Ataturk State Hospital, Cardiovascular Surgery Clinic, Duzce, Turkey