1. Department of Neurology, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
2. Department of Pathology, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
3. Department of Rehabilitation Medicine, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
4. Department of Radiology, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
5. Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.