1 Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Street, Wuhan 430030, P.R. China.
2 Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Street, Wuhan 430022, P.R. China.
3 Department of Neurosurgery, The First People Hospital of Qujing, Qujing 655000, P.R. China.