1. Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China (Z.J., X.S., G.L., J.L.).
2. China International Neuroscience Institute, Beijing (Z.J., X.S., G.L., J.L.).
3. Department of Neurosurgery, Affiliated Hospital of Beihua University, Jilin, China (Z.J.).