1. Institute of Pathology, Nephropathology UnitHannover Medical School Hannover Germany
2. Department of Gastroenterology, Hepatology, and EndocrinologyHannover Medical School Hannover Germany
3. Institute of Pathology and Nephropathology SectionUniversity Hospital Hamburg Eppendorf Hamburg Germany
4. Department of PathologyRadboud University Medical Center Nijmegen the Netherlands
5. Institute for BiostatisticsHannover Medical School Hannover Germany
6. Department of Nephrology and HypertensionHannover Medical School Hannover Germany