1. Department of Medicine, Koç University School of Medicine, Istanbul, Turkey (O.C.E., M. Kanbay)
2. Dialysis Unit, School of Medicine, IIS-Fundacion Jimenez Diaz, Universidad Autónoma de Madrid, Spain (A.O.)
3. Division of Nephrology, Department of Medicine, Suleyman Demirel University School of Medicine, Isparta, Turkey (B.A.)
4. Nephrology Clinic, Dialysis and Renal Transplant Center, ‘C.I. PARHON’ University Hospital, and ‘Grigore T. Popa’ University of Medicine, Iasi, Romania (A.C.)
5. Department of Cardiology, Toranomon Hospital, Tokyo, Japan (M. Kuwabara)
6. Division of Renal Diseases and Hypertension, School of Medicine, University of Colorado Denver, Aurora (M.A.L., R.J.J.).
7. From the Division of Nephrology, Koç University School of Medicine, Istanbul, Turkey (M. Kanbay)