1. Department of Neurology Korea University Guro Hospital Seoul Korea
2. Department of Neurology Konkuk University School of Medicine Seoul Korea
3. Department of Neurology Seoul National University Hospital Seoul Korea
4. Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
5. Eisai Korea Inc. Seoul Korea
6. Department of Neurology Asan Medical Center University of Ulsan College of Medicine Seoul Korea