- Correspondence to Isabelle Sermet-Gaudelus, CRCM, Hôpital Necker-Enfants Malades and INSERM U845, Faculté de Médecine Necker, Université René Descartes, 156 rue de Vaugirard, 75730 Paris, France;
- Received July 11, 2009
- Accepted April 2, 2010
- First published June 3, 2010.
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