1 Pediatric Nephrology Unit, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Université de Lyon, European Rare Kidney Disease Reference Network Center, Lyon, France. Electronic address: bruno.ranchin@chu-lyon.fr.
2 Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, University of Heidelberg, European Rare Kidney Disease Reference Network Center, Heidelberg, Germany.
3 Department of Pediatrics, Division of Nephrology, Children's Mercy Kansas City, Kansas City, Missouri, USA.
4 College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia.
5 Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada; Division of Nephrology and Research Institute, Cell Biology Program, the Hospital for Sick Children, Toronto, Ontario, Canada.
6 Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Fuchu, Japan; Department of Pediatrics, School of Medicine, Keio University, Shinjuku-ku, Tokyo, Japan.
7 Pediatric Nephrology Unit, Department for Woman and Child's Health, University-Hospital of Padua, European Rare Kidney Disease Reference Network Center, Padua, Italy.
8 Department of Pediatric Nephrology, Ghent University Hospital, European Rare Kidney Disease Reference Network center, Ghent, Belgium.
9 Great Ormond Street Hospital and Institute of Child Health, University College London; London, UK.