1. The Saban Research Institute (Y.I., S.G.B.), Neuroscience Program, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California 90027
2. Institut National de la Santé et de la Recherche Médicale (Y.I., S.G.B.), Jean-Pierre Aubert Research Center, Unité 837, Neurobese Labaratory, University Lille 2, Lille 59045, France