1. Department of Neurology, Section of Cerebrovascular Disease, Neurological Institute, Taipei Veterans General Hospital, Taiwan
2. School of Medicine, National Yang Ming University, Taipei, Taiwan
3. Department of Neurology, Laboratory of Neurovascular Ultrasound, Neurological Institute, Taipei Veterans General Hospital, Taiwan
4. Department of Neurology, Laboratory of Neuropsychological Research, Neurological Institute, Taipei Veterans General Hospital, Taiwan
5. Aging and Health Research Center, National Yang Ming University, Taipei, Taiwan
6. Brain Research Center, National Yang Ming University, Taipei, Taiwan