1. Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
2. Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
3. Department of Neurology, Korea University Medical Center Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
4. Department of Neurology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Republic of Korea
5. Department of Neurology, Dongsan Medical Center, Keimyung University College of Medicine, Daegu, Republic of Korea