[1] Univ Calif Los Angeles, Brain Res Inst, Dept Psychiat & Biobehav Sci, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Brain Res Inst, Dept Biol Chem, Los Angeles, CA 90095 USA
[3] Brigham & Womens Hosp, Dept Neurol, Boston, MA 02115 USA
[4] Harvard Univ, Sch Med, Harvard Inst Med, Boston, MA 02115 USA