- Correspondence to Professor Jong S Kim, Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul 138-736, Republic of South Korea; and Professor Byung-Chul Lee, Department of Neurology, Hallym University Sacred Heart Hospital, Anyang, Republic of South Korea;
- Received July 15, 2017
- Revised September 13, 2017
- Accepted September 28, 2017
- First published October 13, 2017.