1. Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
2. Ghent University Hospital, Ghent, Belgium
3. Gazi University Hospital, Ankara, Turkey
4. Ospedale San Paolo, Department of Health Sciences, University of Milan, Milan, Italy
5. Hopital Femme Mere Enfant, Lyon University, Bron, France
6. Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
7. "A. and P. Kyriakou" Children’s Hospital, Athens, Greece
8. Ghent University, Utopaed, Belgium
9. Servicio de Nefrología Pediátrica, Hospital Universitari Vall d'Hebron, Barcelona, España
10. KfH Pediatric Kidney Center, Marburg, Germany
11. Children’s Hospital, Hannover, Germany
12. Center for Pediatric and Adolescent Medicine, Heidelberg, Germany