1 Neurology, Seoul National University Hospital, Seoul, South Korea.
2 Translational Medicine, Seoul National University College of Medicine, Seoul, South Korea.
3 Neurology, College of Medicine, Ewha Womans University, Seoul, South Korea.
4 Radiology, College of Medicine, Ewha Womans University, Seoul, South Korea.
5 Neurology, Neuroscience Research Institute, Medical Research Council, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, South Korea [email protected].