1. Department of Pain, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
2. Department of Anesthesiology and Pain, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
3. Department of Pain, Kunshan Hospital of Integrated Traditional Chinese and Western Medicine, Kunshan, Jiangsu, China
4. Department of Pain, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
5. Department of Anesthesiology, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
6. Department of Pain Medicine, China-Japan Friendship Hospital, Beijing, China
7. Department of Pain, Bayingolin Mongolian Autonomous Prefecture People’s Hospital, Xinjiang, China