1. Department of Genetic Medicine, Weill Medical College of Cornell University, New York, NY 10065.
2. Tri-Institutional Laboratory of Comparative Pathology, Weill Cornell Medical College, Memorial Sloan-Kettering Cancer Center, and Rockefeller University, New York, NY 10065.
3. INSERM U986, University Paris-Descartes, 75005 Paris, France.
4. Neuropediatrics Unit, Bicêtre Hospital, Le Kremlin Bicêtre, 94275 Paris, France.