[1] UNIV CALIF LOS ANGELES, REED NEUROL RES CTR, DIV NEUROSURG, LOS ANGELES, CA 90024 USA
[2] UNIV CALIF LOS ANGELES, REED NEUROL RES CTR, DIV NEUROPATHOL, LOS ANGELES, CA 90024 USA
[3] UNIV CALIF LOS ANGELES, INST BRAIN RES, LOS ANGELES, CA 90024 USA