1. Department of Nephrology, Charité Universitätsmedizin Berlin, Berlin, Germany
2. Department of Nephrology, University of Heidelberg, Heidelberg, Germany
3. Department of Infectious Diseases and Department of Nephrology, University Duisburg-Essen, Essen, Germany
4. Department of Nephrology and Transplantation, Cologne Merheim Medical Centre, Cologne, Germany
5. Department of General, Visceral and Transplantation Surgery, Hannover Medical School, Hannover, Germany
6. Department of General, Visceral and Transplantation Surgery, Munich University Hospital, Campus Grosshadern, Munich, Germany
7. Department of Nephrology and Hypertension, University of Erlangen-Nuremberg, Erlangen, Germany
8. Department of Internal Medicine and Nephrology, Kidney Transplant Centre, Nephrological Centre of Lower Saxony, Klinikum Hann. Münden, Germany
9. Department of Nephrology and Intensive Care, Charité Campus Virchow, Charité-Universitätsmedizin Berlin, Berlin, Germany
10. Department of Nephrology, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt am Main, Germany
11. Department of Nephrology and Hypertension, Inselspital, Bern, Switzerland
12. III. Medical Clinic, University Hospital Hamburg, Hamburg, Germany
13. University Hospital Westpfalz, Kaiserslautern, Germany
14. Novartis Pharma GmbH, Nuernberg, Germany