J Korean Neurosurg Soc. 2018;61(5):600-607.   Published online August 31, 2018
DOI: https://doi.org/10.3340/jkns.2017.0248

J Korean Neurosurg Soc. 2010;47(3):191-198.
DOI: https://doi.org/10.3340/jkns.2010.47.3.191

J Korean Neurosurg Soc. 2009;45(6):397-400.
DOI: https://doi.org/10.3340/jkns.2009.45.6.397

J Korean Neurosurg Soc. 2008;44(6):385-388.
DOI: https://doi.org/10.3340/jkns.2008.44.6.385

J Korean Neurosurg Soc. 2008;44(5):285-294.
DOI: https://doi.org/10.3340/jkns.2008.44.5.285