1. Neurology Department, Beijing Hospital, National Center of Gerontology, Beijing, P.R. China
2. *These authors contributed equally to this work.
3. Department of Neurosurgery, Chinese PLA General Hospital-Sixth Medical Center, Beijing, P.R. China
4. MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China
5. School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding, Hebei, P.R. China
6. MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, P.R. China
7. Department of Neurology, Peking University First Hospital, Beijing, P. R. China
8. Department of Orthopedics, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China