1. Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration, Ministry of Education, Department of Orthopedics, Tongji Hospital, School of Medicine,
Tongji University, Shanghai 200092, China.
2. Frontier Science Center for Stem Cell Research, School of Life Science and Technology,
Tongji University, Shanghai 200092, China.
3. Clinical Center for Brain and Spinal Cord Research,
Tongji University, Shanghai 200092, China.