1. Department of Medical Biochemistry, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa , Istanbul 34098 , Turkey
2. Department of Medical Biochemistry, T.C. Istanbul Yeniyuzyil University, Faculty of Medicine , Istanbul 34010 Turkey
3. Department of Urology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa , Istanbul 34098 , Turkey