1. Renal Division, University Hospital, Ghent, Belgium
2. Renal Division, AHEPA Aristotelian University Hospital, Thessaloniki, Greece
3. Renal Division, Brugmann Hospital, Brussels, Belgium
4. Division of Nephrology, Civil Hospital, Colmar, France
5. Department of Nephrology and Medical Intensive Care, Rudolf Virchow University Hospital, Berlin, Germany
6. Renal Division, Manchester Royal Infirmary, Manchester, England
7. Renal Unit, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
8. Department of Nephrology, St. Bortolo Hospital, Vicenza, Italy
9. Division of Nephrology, University of Brescia, Brescia, Italy
10. Renal Division, St. Jan Hospital, Bruges, Belgium
11. Renal Division, University Hospital, Caen, France
12. Renal Division, University Hospital, La Paz, Madrid, Spain
13. Renal Division, Leicester General Hospital, Leicester, England