1. Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
2. Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
3. Department of Epidemiology, Tianjin Neurological Institute, Tianjin, China
4. Department of Neurology, Tianjin Haibin People’s Hospital, Tianjin, China
5. Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
6. Central of Clinical Epidemiology, Tianjin Medical University General Hospital, Tianjin, China