1. Department of Neurosurgery General Hospital of Tianjin Medical University Tianjin China
2. State Key Laboratory of Experimental Hematology Tianjin China
3. Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous System Tianjin Medical University General Hospital, Ministry of Education Tianjin China
4. Department of Neurosurgery Tianjin First Central Hospital Tianjin China