1. Department of Neurology, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Republic of Korea
2. Department of Neurology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea
3. Department of Neurology, Pusan National University Yangsan Hospital, Pusan National University, Yangsan, Republic of Korea
4. Department of Neurology, Yonsei Unviersity College of Medicine, Seoul, Republic of Korea