1. Department of Cardiology, Cerrahpaşa Medical Faculty, Istanbul University, Istanbul, Turkey
2. Department of Biochemistry, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
3. Department of Endocrinology & Metabolism, Atatürk University Medical Faculty, Erzurum, Turkey
4. Department of Public Health, Cerrahpaşa Medical Faculty, Istanbul University, Istanbul, Turkey
5. Department of Cardiology, State Hospital, Hatay, Turkey
6. Siyami Ersek Center for Cardiovascular Surgery, Istanbul, Turkey
7. Biochemistry Laboratory, Institute of Cardiology, Istanbul University, Istanbul, Turkey