- Correspondence to Prof. Seung Hyun Kim, Department of Neurology, College of Medicine, Hanyang University , Seoul 04763, Korea (the Republic of); and Dr Byung-Jo Kim, Department of Neurology, Korea University College of Medicine, Seoul 02841, Korea (the Republic of);
- Received December 28, 2017
- Revised February 22, 2018
- Accepted March 5, 2018
- First published April 17, 2018.
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