1. Department of Neurology Huashan Hospital Fudan University Shanghai China
2. National Center for Neurological Disorders Shanghai China
3. Department of Neurology Peking University First Hospital Beijing China
4. Department of Neurology Shandong University Qilu Hospital Jinan Shandong Province China
5. Department of Neuromuscular Disorders The Third Hospital of Hebei Medical University Shijiazhuang Hebei Province China
6. Department of Biostatistics, School of Public Health and Key Laboratory of Public Health Safety Fudan University Shanghai China