1. Department of Physiology and Pharmacology, Loma Linda University Medical Center, Loma Linda, United States
2. Department of Anesthesiology, Loma Linda University Medical Center, Loma Linda, CA 92354, United States
3. Department of Neurosurgery, Loma Linda University Medical Center, 11234 Anderson Street, Room 2562B, Loma Linda, CA 92354, United States