1. Klinikum München-Harlaching, Teaching Hospital of the Ludwig-Maximilians-University Munich, Munich, Germany
2. Krankenhaus Barmherzige Brüder, Teaching Hospital of the University of Regensburg, Regensburg, Germany
3. Institute of Laboratory Medicine and Pathobiochemistry, Philipps-University, Marburg, Germany
4. Department of Biomedicine, Aarhus University, Aarhus, Denmark
5. Nephrology Outpatient Clinic, Dortmund, Germany
6. Institute for Experimental Immunology, Euroimmun AG, Lübeck, Germany
7. Kidney Transplant Centre, Municipal Hospital Berlin-Friedrichshain, Teaching Hospital of the Charité Berlin, Berlin, Germany