Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Jul 29;65(1):4–12. doi: 10.3340/jkns.2021.0035

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2022 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.

PMC Copyright notice

jkns-2021-0035-suppl3.pdf^{(371.4KB, pdf)}