1. Department of Genetics, University Medical Center Utrecht
2. Department of Pathology, University Medical Center Utrecht
3. Department of Genetics, University Medical Center Groningen, University of Groningen
4. Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen
5. Department of Nephrology and Hypertension, University Medical Center Utrecht
6. Department of Pediatric Nephrology, Wilhelmina Children's Hospital, University Medical Center Utrecht