1. Department of Neurosurgery, Lin Yi Central Hospital, Linyi, Shandong 276400, P.R. China
2. Department of Medicine, Yantai Yuhuangding Hospital of Laishan Branch, Yantai, Shandong 264003, P.R. China
3. State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China