1. Medical Genetics Service HCPA, Dep Genet UFRGS and INAGEMP, Porto Alegre, Brazil
2. Taipei Veterans General Hospital and Institute of Clinical Medicine, National Yang-Ming University, School of Medicine, Taipei, Taiwan
3. Royal Free London NHS Foundation Trust, University College of London, London, United Kingdom
4. Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
5. Center for Pediatric and Adolescent Medicine, University Medical Center, University of Mainz, Mainz, Germany
6. Department of Pediatrics, University Hospital “Germans Trias i Pujol,” Universitat Autònoma de Barcelona, Badalona, Spain
7. Department of Nephrology, Royal Melbourne Hospital and University of Melbourne, Victoria, Australia
8. Shire, Zug, Switzerland