1. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People’s Republic of China
2. Department of Spine Surgery, The First Hospital of Jilin University, 71 Xinmin Street, Changchun 130021, People’s Republic of China
3. Department of Anesthesia, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, People’s Republic of China
4. Department of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Philadelphia, Pennsylvania 19104, United States
5. Department of Neurosurgery, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, Pennsylvania 19104, United States
6. Department of Anesthesia, China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun 130033, People’s Republic of China