1. Department of Nephrology, Klinikum Stuttgart—Katharinenhospital, Stuttgart, Germany
2. Central Institute for Transfusion Medicine and Blood Donation, Katharinenhospital Stuttgart, Stuttgart, Germany
3. Transplant Immunology Research Center of Excellence, Koç University Hospital, Istanbul, Turkey
4. Experimental Immunology, Department for Children and Adolescents Medicine, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
5. Department of Nephropathology, Department of Pathology, University of Erlangen-Nürnberg, Erlangen, Germany
6. Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria