. 2019 Mar 26;15(2):243–249. doi: 10.3988/jcn.2019.15.2.243
Copyright © 2019 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.
Fig. 1. Selection of cases and controls.
