1. Department of General, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
2. Department of Neurosurgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
3. Department of Orthopaedic, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China