1. General Hospital of Ningxia Medical University, Yinchuan, China
2. The No. 1 People’s Hospital of Shizuishan, Shizuishan, China
3. The Second Affiliated Hospital of Air Force Medical University, Xi'an, China
4. Ningxia Medical University, Yinchuan, China
5. Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
6. State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, China
7. Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, China
8. Diagnosis and Treatment Engineering Technology Research Center of Nervous System Diseases of Ningxia Hui Autonomous Region, Yinchuan, China
9. Neurology Center, General Hospital of Ningxia Medical University, Yinchuan, China