1. Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, Korea.
2. Department of Pediatrics, Daewoo General Hospital, Ajou University School of Medicine, Geoje, Korea.
3. Department of Pediatrics, Jeju National University School of Medicine, Jeju, Korea.
4. Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Innsbruck, Austria.
5. Children's and Academic Renal Unit, Dorothy Hodgkin Building-University of Bristol, Bristol, UK.
6. Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
7. Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.
8. Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea.