[1] Osped Riuniti & CNR IBIM, Unita Operativa Nefrol Dialisi & Trapianto, I-89125 Reggio Di Calabria, Italy
[2] Free Univ Brussels, Hop Erasme, Dept Med Chirurg Nephrol Dialyse & Transplantat, B-1070 Brussels, Belgium
[3] Hosp Univ Cent Asturias, Serv Metab Oseo Mineral, Oviedo, Spain
[4] Univ Lyon 1, F-69365 Lyon, France
[5] Hop Edouard Herriot, INSERM, U820, Lyon, France
[6] Hop Edouard Herriot, Dept Pediat, Lyon, France
[7] Univ Med Gr T Popa, CI Parhon Univ Hosp, Iasi, Romania
[8] Univ Erlangen Nurnberg, Dept Hypertens & Nephrol, Nurnberg, Germany
[9] Hop Edouard Herriot, Dept Nephrol, Lyon, France
[10] Karolinska Inst, Div Renal Med, Dept Clin Sci Intervent & Technol, Stockholm, Sweden
[11] Karolinska Univ Hosp, Dept Renal Med, Stockholm, Sweden
[12] Univ Aberdeen, Dept Med & Therapeut, Aberdeen, Scotland
[13] Leeds Teaching Hosp NHS Trust, Dept Renal Med, Leeds, W Yorkshire, England
[14] A Manzoni Hosp, Dept Nephrol Dialysis & Transplantat, Lecce, Italy
[15] St James Univ Hosp, Renal Unit, Leeds LS9 7TF, W Yorkshire, England
[16] Univ Clin Ctr, Dept Nephrol, Skopje, Macedonia
[17] Ghent Univ Hosp, Nephrol Sect, B-9000 Ghent, Belgium
[18] Univ Hosp, Div Nephrol, Wurzburg, Germany