J Korean Neurosurg Soc. 2012;51(5):305-307.   Published online May 31, 2012
DOI: https://doi.org/10.3340/jkns.2012.51.5.305

J Korean Neurosurg Soc. 2010;48(2):181-184.
DOI: https://doi.org/10.3340/jkns.2010.48.2.181

J Korean Neurosurg Soc. 2009;45(2):118-121.
DOI: https://doi.org/10.3340/jkns.2009.45.2.118

J Korean Neurosurg Soc. 2004;35(1):106-108.

J Korean Neurosurg Soc. 2002;31(3):293-296.

J Korean Neurosurg Soc. 1997;26(12):1739-1742.