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. Rostock University Medical Centre, Rostock, Germany
5. University of Sheffield, Sheffield, UK
6. Department of Health Sciences, Ospedale San Paolo, University of Milan, Milan, Italy
7. Hopital Femme Mere Enfant, Lyon University, Bron, France
8. Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
9. “A & P Kyriakou”, Children’s Hospital, Athens, Greece
10. Ghent University, Utopaed, Belgium
11. Children’s Hospital, Hannover, Germany
12. KfH Pediatric Kidney Center, Marburg, Germany
13. Center for Pediatric & Adolescent Medicine, Heidelberg, Germany