1. Division of Nephrology, Department of Medicine; Koc University School of Medicine; Istanbul Turkey
2. Department of Cardiology; Koc University Hospital; Istanbul Turkey
3. Division of Nephrology, Department of Internal Medicine; Suleyman Demirel University School of Medicine; Isparta Turkey
4. Department of Nephrology; University of Medicine and Pharmacy "Gr. T. Popa"; lasi Romania
5. Division of Renal Diseases and Hypertension, School of Medicine; University of Colorado Denver; Aurora Colorado
6. Department of Cardiology; Toranomon Hospital; Tokyo Japan
7. Department of Biochemistry; Koc University Hospital; Istanbul Turkey
8. Instituto Venezolano de Investigaciones CientÍficas (IVIC-Zulia), Nephrology Service Hospital Universitario, Universidad del Zulia; Maracaibo Venezuela