1. Section for Clinical Biometrics, Center for Medical Statistics, Informatics and Intelligent Systems; Medical University of Vienna; Vienna Austria
2. Sickness Fund Burgenland; Burgenländische Gebietskrankenkasse; Eisenstadt Austria
3. Austrian Agency for Health and Food Safety; Vienna Austria
4. Main Association of the Austrian Social Security Institutions; Vienna Austria
5. Department of Finance; University of Vienna; Vienna Austria
6. PERI Change GmbH; Vienna Austria
7. Division of Nephrology; Stanford University School of Medicine; Palo Alto CA USA
8. Section of Nephrology, Department of Medicine; Baylor College of Medicine; Houston TX USA