[1] Hop Necker Enfants Malad, INSERM, EMI 0210, F-75015 Paris, France
[2] Hop A Trousseau, Serv Hematol Biol, Paris, France
[3] Hop A Trousseau, Serv Hematol & Oncol Pediat, Paris, France
[4] Hop St Antoine, Serv Embryol Pathol & Cytogenet, F-75571 Paris, France
[5] Hop Necker Enfants Malad, Serv Histol Embryol & Cytogenet, F-75015 Paris, France
[6] Univ Leuven, Ctr Human Genet, Louvain, Belgium
[7] Univ Paris 06, UPRES 1638, F-75252 Paris 05, France