. 2021 Apr 14;6(1):86–89. doi: 10.22603/ssrr.2020-0219
Copyright © 2022 by The Japanese Society for Spine Surgery and Related Research
Spine Surgery and Related Research is an Open Access journal distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view the details of this license, please visit (https://creativecommons.org/licenses/by-nc-nd/4.0/).