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. 2021 Oct 7;64(6):995–1003. doi: 10.3340/jkns.2021.0074

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Copyright © 2021 The Korean Neurosurgical 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.

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