1 Pediatric Department, Consorcio Hospital General, University of Valencia, Valencia.
2 CIBER Fisiopatología Obesidad y Nutrición (CB06/03), Instituto de Salud Carlos III, Madrid, Spain.
3 Department of Nephrology and Arterial Hypertension, The Children's Memorial Health Institute, Warsaw, Poland.
4 Department of Medicine and Coordination Centre for Drug Development, University of Debrecen, Debrecen, Hungary.
5 Department of Paediatrics, 2nd Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czech Republic.
6 1st Department of Pediatrics, Aristotle University of Thessaloniki, Hippokratio Hospital, Thessaloniki, Greece.
7 Department of Paediatric Nephrology and NIHR/Wellcome Trust Clinical Research Facility, University of Manchester, Manchester Academic Health Science Centre, Royal Manchester Children's Hospital, Manchester, UK.
8 Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany.