1 Ramsay-Générale de Santé, Clinique du Landy, Department of Nephrology and Dialysis and Department of Renal Physiology, Necker Hospital, University of Paris Descartes, Paris, France.
2 INSERM U1132 and USPC Paris-Diderot, Department of Rheumatology, Hôpital Lariboisière, Paris, France. Electronic address: martine.cohen-solal@inserm.fr.