. 2019 Jul 24;16(3):448–453. doi: 10.14245/ns.1938020.101
Copyright © 2019 by the Korean Spinal Neurosurgery Society
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.