1. Department of Neurology, Seoul National University Hospital, Seoul, South Korea
2. Program in Neuroscience, Neuroscience Research Institute of SNUMRC, College of Medicine, Seoul National University, Seoul, South Korea
3. Department of Radiology, Seoul National University Hospital, Seoul, South Korea
4. Department of Neurology, Chung-Ang University Hospital, Seoul, South Korea
5. Protein Metabolism Research Center, Seoul National University College of Medicine, Seoul, South Korea
6. Department of Neurology, The Armed Forces Capital Hospital, Sungnam, South Korea