1. Department of Neurology, Seoul Medical Center, Seoul, Republic of Korea
2. Department of Neurology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
3. Department of Neurology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
4. Department of Radiology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea