1. Kuratorium for Dialysis and Transplantation (KfH), Neu-Isenburg, Germany
2. Center for Public Health, Department of Epidemiology, Medical University of Vienna, Vienna, Austria
3. Clinical Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
4. Arbor Research Collaborative for Health, Ann Arbor, Michigan
5. Austrian Institute of Technology, Vienna, Austria
6. Nephrology, Clinique Charcot, Sainte-Foy-lès-Lyon, France
7. Investigation Network Initiative-Cardiovascular and Renal Clinical Trialists (INI-CRCT Network), Nancy, France