1. Department of Nephrology; University Hospital Eppendorf UKE; Hamburg Germany
2. Nephrology, Rheumatology, Diabetology and General Internal Medicine; University Hospital Cologne; Cologne Germany
3. Department of Nephrology and Hypertension; University Hospital Erlangen; Erlangen Germany
4. RJM Group; LLC; Washington DC USA
5. Global Health Economics & Outcomes Research; Sanofi-Aventis US; Cambridge MA USA