1. Department of Neurology Beijing Tiantan Hospital Capital Medical University Beijing China
2. Department of Neurology The Third Hospital of Hebei Medical University Shijiazhuang Hebei China
3. Department of Radiology Beijing Geriatric Hospital Beijing China
4. China National Clinical Research Center for Neurological Diseases Beijing China
5. Center for Biomedical Imaging Research, Department of Biomedical Engineering School of Medicine, Tsinghua University Beijing China
6. Beijing Institute of Brain Disorders Capital Medical University Beijing China