1. Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
2. Neurosurgical Department, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
3. Medical Research Center, Sun Yat‑Sen Memorial Hospital, Sun Yat‑Sen University, Guangzhou, Guangdong 510120, P.R. China