1. Department of Pediatrics I University Children's Hospital Heidelberg Heidelberg Germany
2. Division of Pediatric NephrologyUCLA Mattel Children’s HospitalLos AngelesCA USA
3. Nephrology Unit, Department of Pediatrics Institute for Scientific Research, Bambino Gesù Children's Hospital Rome Italy
4. Department of Paediatric Nephrology Great Ormond Street Hospital for Children NHS Foundation Trust London UK
5. Department of Pediatric Nephrology Hannover Medical School Hannover Germany
6. Nephrology Division Hospital do Rim, UNIFESP São Paulo Brazil
7. Division of Paediatric and Adolescent Medicine, Department of Pediatrics Oslo University Hospital Oslo Norway
8. Department of Paediatric NephrologyNottingham Children's Hospital Nottingham UK
9. Novartis Pharma AG Basel Switzerland
10. Biometrics and Statistical ScienceNovartis PharmaceuticalsEast HanoverNJ USA