J Korean Neurosurg Soc. 2015;57(4):311-313.   Published online April 24, 2015
DOI: https://doi.org/10.3340/jkns.2015.57.4.311

J Korean Neurosurg Soc. 2015;57(4):276-282.   Published online April 24, 2015
DOI: https://doi.org/10.3340/jkns.2015.57.4.276

J Korean Neurosurg Soc. 2011;49(4):248-251.
DOI: https://doi.org/10.3340/jkns.2011.49.4.248

J Korean Neurosurg Soc. 2010;48(2):139-144.
DOI: https://doi.org/10.3340/jkns.2010.48.2.139

J Korean Neurosurg Soc. 2007;42(5):406-409.
DOI: https://doi.org/10.3340/jkns.2007.42.5.406

J Korean Neurosurg Soc. 2003;33(2):204-207.