1. Department of Neurosurgery, Tianjin Medical University General Hospital; Tianjin Neurological Institute; Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education; Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China.
2. Department of Neurosurgery, Kailuan Hospital, Hebei United University, Tangshan, China.
3. School of Medicine, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin, China.
4. Department of Neurology, Henry Ford Hospital, Detroit, Michigan.