[1] Univ Calif San Diego, Dept Cellular & Mol Med, 9500 Gilman Dr, La Jolla, CA 92093 USA
[2] Salk Inst Biol Studies, Genet Lab, 10010 North Torrey Pines Rd, La Jolla, CA 92037 USA
[3] Univ Calif San Diego, Dept Pediat, 9500 Gilman Dr, La Jolla, CA 92093 USA
[4] Univ Groningen, Univ Med Ctr Groningen, Dept Neurosci, Sect Med Physiol, Groningen, Netherlands
[5] Univ Calif San Diego, Rady Childrens Hosp, Dept Neurosurg, San Diego, CA 92123 USA
[6] Biogen, Neuroimmunol, 225 Binney St, Cambridge, MA 02142 USA
[7] Univ Calif San Diego, Dept Med, 9500 Gilman Dr, La Jolla, CA 92093 USA