1. Department of Medicine, Division of Nephrology Koc University School of Medicine Istanbul Turkey
2. Cardiovascular Diseases Institute “Grigore T. Popa” University of Medicine and Pharmacy Iasi Romania
3. Department of Medicine Koc University School of Medicine Istanbul Turkey
4. Department of Medicine, Division of Nephrology Suleyman Demirel University School of Medicine Isparta Turkey
5. Division of Nephrology Miulli General Hospital Acquaviva delle Fonti Italy
6. Department of Nephrology “Grigore T. Popa” University of Medicine and Pharmacy Iasi Romania