1. Clinical College of Neurology, Neurosurgery and Neurorehabilitation Tianjin Medical University Tianjin China
2. Department of Neurology Tianjin Huanhu Hospital Tianjin Key Laboratory of Cerebrovascular and of Neurodegenerative Diseases Tianjin Dementia Institute Tianjin China
3. Department of Neurology Cangzhou People's Hospital Cangzhou China
4. Department of Neurology Beijing Tiantan Hospital China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China