1. Institute of Molecular and Experimental Medicine, Cardiff University, Wales, United Kingdom.
2. sanofi-aventis, Frankfurt, Germany.
3. Third Medical Department, Carl-Gustav-Carus University, Dresden, Germany.
4. Justus-Liebig-University Giessen, Germany.
5. Division of Nephrology, Vivantes Klinikum im Friedrichshain, Berlin, Germany.