1. Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
2. Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
3. Department of Biostatistics, Beijing International Center for Mathematical Research, Peking University, Beijing, China
4. Department of Biostatistics, School of Public Health, Peking University, Beijing, China
5. Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China