[1] Hop Europeen Georges Pompidou, Assistance Publ Hosp Paris, Serv Immunol Biol, Paris, France
[2] INSERM, Unite 255, Ctr Rech Biomed Cordeliers, Paris, France
[3] Univ Utrecht, Bijvoet Ctr Biomol Res, Fac Sci, Utrecht, Netherlands
[4] Hop Robert Debre, Assistance Publ Hop Paris, Serv Nephrol Pediat, F-75019 Paris, France