1. Department of Neurology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
2. Department of Neurology, Rizhao City People's Hospital, Rizhao, Shandong 1250832, P.R. China
3. Department of Traditional Chinese Medicine, Dongying Bonesetting Hospital, Dongying, Shandong 257000, P.R. China