1. Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
2. Department of Cerebrovascular Disease, The First Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
3. Chongqing Traditional Chinese Medicine Hospital, Chongqing 400000, P.R. China