1. Department of Neurosurgery, Changzheng Hospital, Navy Medical University, Shanghai 200003, P.R. China
2. Department of Neurosurgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
3. Department of Neurology, Changzheng Hospital, Navy Medical University, Shanghai 200003, P.R. China
4. Department of Operating Room, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
5. Department of Neurology, Pudong People's Hospital, Shanghai 201200, P.R. China