[1] Hacettepe Univ Fac Oo Med, Div Pediat Nephrol, Ankara, Turkey
[2] Ctr Pediat & Adolescent Med, Div Pediat Nephrol, Heidelberg, Germany
[3] Heidelberg Univ, Inst Med Biometry & Informat, Heidelberg, Germany
[4] Hannover Med Sch, Dept Pediat Kidney Liver & Metab Dis, Hannover, Germany
[5] Charite Childrens Hosp, Clin Pediat Nephrol, Berlin, Germany
[6] Cukurova Univ, Sch Med, Div Pediat Nephrol, Adana, Turkey
[7] Ege Univ, Div Pediat Nephrol, Fac Med, Izmir, Turkey
[8] Istanbul Univ, Cerrahpasa Med Sch, Div Pediat Nephrol, Istanbul, Turkey
[9] Hacettepe Univ Fac Med, Div Pediat Cardiol, Ankara, Turkey
[10] Childrens Mem Hlth Inst, Dept Nephrol & Kidney Transplantat, Warsaw, Poland
[11] Hop Femme Mere Enfant, Lyon, France
[12] Univ Lyon, Lyon, France
[13] Medeniyet Univ, Goztepe Trainig & Res Hosp, Div Pediat Nephrol, Istanbul, Turkey
[14] Univ Bern, Div Paediat Nephrol, Bern, Switzerland