- Correspondence to Professor Jung-Joon Sung, Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Republic of Korea;
- Received October 3, 2018
- Revised December 25, 2018
- Accepted January 4, 2019
- First published March 23, 2019.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.