1. Department of Nephrology; Charité University - Mitte; Berlin Germany
2. Division of Nephrology; Department of Medicine; University of Erlangen; Erlangen Germany
3. Transplant, Centre Cologne; Cologne General Hospital; Cologne Germany
4. Hospital Clinic; Barcelona Spain
5. Division of Nephrology and Clinical Immunology; RWTH Aachen University; Aachen Germany
6. Department of Medicine IV; University Hospital LMU; Munich Germany
7. Transplant Care Centre Frankfurt; Frankfurt Germany
8. Section of Nephrology and Hypertension; Department of Internal Medicine IV; Tübingen University Hospital; Tübingen Germany
9. Department of Nephrology; University of Heidelberg; Heidelberg Germany
10. Pfizer Pharma GmbH; Berlin Germany
11. Department of Nephrology; Hannover Medical School; Hannover Germany
12. Department of Nephrology; Charité University - Virchow; Berlin Germany