1. Department of Nephrology, Faculty of Medicine, Abant Izzet Baysal University, 14280 Bolu, Turkey
2. Department of Medical Biochemistry, Faculty of Medicine, Abant Izzet Baysal University, 14280 Bolu, Turkey
3. Department of Internal Medicine, Faculty of Medicine, Abant Izzet Baysal University, 14280 Bolu, Turkey
4. Department of Nephrology, Tepecik Education and Research Hospital, 35100 Izmir, Turkey
5. Department of General Surgery, Faculty of Medicine, Abant Izzet Baysal University, 14280 Bolu, Turkey