1. Department of Nephrology; Clermont-Ferrand University Hospital; Clermont-Ferrand France
2. Department of Nephrology and Clinical Immunology; CHRU de Tours; Tours France
3. Biostatistics Unit (DRCI); University Hospital Clermont-Ferrand; Clermont-Ferrand France
4. Department of Nephrology; CHRU de Rouen; Rouen France
5. Department of Nephrology Dialysis and Kidney Transplantation; CHU de Poitiers; Poitiers France
6. Pathology Department; Clermont-Ferrand University Hospital; Clermont-Ferrand France
7. Pathology Department; Necker Hospital, Assistance Publique-Hôpitaux de Paris; Paris France
8. Department of Nephrology Dialysis and Kidney Transplantation; CHU d' Angers; Angers France
9. Department of Nephrology and Kidney Transplantation; Necker Hospital, Assistance Publique-Hôpitaux de Paris; Paris France