1. Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China.
2. Institute of Microsurgery on Extremities, Shanghai Sixth People's Hospital, Shanghai, China.
3. Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China.
4. Department of Neurosurgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China.