1. West China Hospital, Sichuan University; Department of Neurology; No. 37, Guo Xue Xiang Chengdu Sichuan China 610041
2. School of Public Health, Sichuan University; Epidemic Disease & Health Statistics Department; Sichuan Chengdu China
3. West China Hospital, Sichuan University; Department of Pharmacy; No.37, Guo Xue Xiang Chengdu Sichuan China 60041