[1] INSERM, U745, Paris, France
[2] Cornell Univ, Weill Med Coll, New York, NY 10021 USA
[3] INRA, UMR 703, F-44026 Nantes, France
[4] CHU Nord, Nantes, France
[5] Hop Necker Enfants Malad, Paris, France
[6] Lyon Hosp, Ctr Biol & Pathol Est, Lyon, France
[7] INSERM, U820, F-69008 Lyon, France
[8] INSERM, U649, Nantes, France