J Korean Neurosurg Soc. 2021;64(1):120-124.   Published online June 4, 2020
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DOI: https://doi.org/10.3340/jkns.2014.56.1.42

J Korean Neurosurg Soc. 2014;55(4):190-194.   Published online April 30, 2014
DOI: https://doi.org/10.3340/jkns.2014.55.4.190

J Korean Neurosurg Soc. 2011;50(3):179-184.
DOI: https://doi.org/10.3340/jkns.2011.50.3.179

J Korean Neurosurg Soc. 2004;36(5):419-421.

J Korean Neurosurg Soc. 2004;35(5):492-497.