1. Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
2. Department of Neurology, the 305 Hospital of Chinese PLA, Beijing 100017, China
3. Department of Internal Medicine, Gucheng County Hospital of Traditional Chinese Medicine, Hengshui, Hebei 253800, China
4. Department of Neurology, Tangshan Hospital of Traditional Chinese Medicine, Tangshan, Hebei 063000, China
5. Department of Neurology, Hainan Hospital of Chinese PLA General Hospital, Sanya, Hainan 572013, China.