1. Department of Anesthesiology and Perioperative Care; University of California Irvine; Irvine USA
2. Department of Physical Medicine and Rehabilitation; University of California Irvine; Irvine USA
3. Reeve-Irvine Research Center for Spinal Cord Injury; University of California Irvine; Irvine USA
4. Department of Anesthesiology; The First hospital of China Medical University; Shenyang China
5. Department of Anesthesiology and Pain Medicine; School of Medicine; Kyung Hee University; Seoul Korea
6. Department of Pharmacology; School of Medicine; University of California Irvine; Irvine USA