1. Department of Pain, The Third Xiangya Hospital and Institute of Pain Medicine, Central South University, Changsha, China
2. Hunan Key Laboratory of Brain Homeostasis, Central South University, Changsha, China
3. Department of Pain Management and Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
4. Department of Pain Management and Anesthesiology, Yueyang Traditional Chinese Medicine Hospital, Yueyang, China
5. Department of Pain, Yongzhou Central Hospital, Yongzhou, China
6. Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, China
7. Bourns Engineering, The University of California, Riverside, Riverside, California, USA