1. Department of Neurosurgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, P.R. China.
2. Department of Neurosurgery, Jinling Hospital, Nanjing, P.R. China.
3. Department of Neurosurgery, Affiliated Jinling Hospital, Nanjing Medical University, Nanjing, P.R. China.