1. Department of Neurosurgery and Anesthesiology, The First People’s Hospital of Kunshan affiliated with Jiangsu University, Suzhou, P. R. China
2. Department of Rehabilitation, The 454th Hospital of Chinese PLA, Nanjing, Jiangsu, China
3. Department of Neurosurgery, Fourth Affiliated Yancheng Hospital of Nantong University, Yancheng, P. R. China
4. Department of Neurosurgery, Affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing, P. R. China