[1] IRCCS Ca Granda Fdn Maggiore Policlin Hosp, Dept Nephrol Dialysis & Kidney Transplants, Milan, Italy
[2] Maggiore Carita Univ Hosp, Nephrol & Dialysis Unit, Novara, Italy
[3] Karolinska Inst, Dept Clin Sci Intervent & Technol, Div Renal Med, Baxter Novum, Stockholm, Sweden