1. High French School of Public Health (EHESP: Ecole des Hautes Etude de Sante Publique); Rennes France
2. University of Rennes 1, UMR CNRS 6290; Rennes France
3. Service of Nephrology; Pontchaillou hospital; Rennes France
4. Service of Nephrology; Hospital of Nantes; Nantes France
5. Service of Nephrology; Robert Boulin hospital; Libourne France
6. REIN (Renal Epidemiology and Information Network) registry; Biomedecine Agency; Saint Denis La Plaine France