. 2021 Mar 30;17(2):249–256. doi: 10.3988/jcn.2021.17.2.249
Copyright © 2021 Korean Neurological Association
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.