1. Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
2. Department of Health Statistics, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China.
3. Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China.
4. Department of Neuroepidemiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.
5. Department of Hematology and Research Laboratory of Hematology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
6. Department of Public Affairs Development, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
7. Department of Respiratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China.