1. Patienten–Heimversorgung, Giessen, Germany
2. Departments of Nephrology, Transplantology and Internal Diseases, Medical University of Gdansk, Gdansk, Poland
3. Internal Medicine, Clinic IV, University of Cologne, Köln, Germany
4. Principal Investigator, ICRC-International Clinical Research Consulting, Berlin, Germany
5. CCDRD AG, Neuenhagen, Germany