1. Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
2. Institute for Forensic Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
3. Institute of Pathology, University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
4. Institute of Pathology, University Hospital Rostock, Strempelstr. 14, 18055 Rostock, Germany
5. Division of Pediatric Nephrology, University Children's Hospital Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
6. Division of Pediatric Nephrology, University Children's Hospital Motol, V Uvalu 84, 15006, Prague, Czech Republic
7. Department of Pediatrics, University Hospital Rostock, Ernst-Heydemann-Str. 8, 18057 Rostock, Germany
8. Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, 1580 NW 10th Avenue (R-762), Miami, FL 33136, USA