1. Tianjin Medical University General HospitalTianjin Neurological InstituteKey Laboratory of Post‐neurotrauma Neuro‐repair and Regeneration in Central Nervous SystemMinistry of Education and Tianjin CityDepartment of NeurosurgeryTianjin Medical University General Hospital Tianjin 300052 China
2. Beijing Neurosurgical InstituteCapital Medical University Beijing 100050 China
3. Department of PathologyMedical College of Hebei University Baoding Hebei 071000 China