1. Department of Radiology; University of Erlangen-Nuremberg; Germany
2. Department of Nephrology; University of Erlangen-Nuremberg; Germany
3. Department of Pediatrics; University of Erlangen-Nuremberg; Germany
4. Department of Medical Informatics; Biometry and Epidemiology; University of Erlangen-Nuremberg; Germany
5. Department of Nephropathology; University of Erlangen-Nuremberg; Germany