1. Brain Injury Research Center, David Geffen School of Medicine at the University of California–Los Angeles, Los Angeles, California.
2. Department of Neurosurgery, David Geffen School of Medicine at the University of California–Los Angeles, Los Angeles, California.
3. School of Public Health, Loma Linda University, Loma Linda, California.
4. Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California–Los Angeles, Los Angeles, California.