1. Department of Neurology, Neuroscience Center, Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
2. Department of Radiology, Imaging Center, Heart Stroke Vascular Institute, Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
3. Biostatistics Team, Samsung Biomedical Research Institute; Seoul Korea
4. Neurological Institute, Taipei Veterans General Hospital; Taipei Taiwan
5. Faculty of Medicine; National Yang-Ming University School of Medicine; Taipei Taiwan