1. Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
2. Department of Nephrology and Hypertension, University of Erlangen-Nürnberg, Erlangen, Germany
3. Department of Medical Informatics, Biometry and Epidemiology, University of Erlangen-Nürnberg, Erlangen, Germany
4. Department of Nephropathology, University of Erlangen-Nürnberg, Erlangen, Germany