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Lee JC, Lim DJ, Ha SK, Kim SD, Kim SH.Lee JC, et al. Among authors: ha sk.J Korean Neurosurg Soc. 2012 Oct;52(4):420-2. doi: 10.3340/jkns.2012.52.4.420. Epub 2012 Oct 22.J Korean Neurosurg Soc. 2012.PMID: 23133737Free PMC article.
Ha SK, Park JY, Kim SH, Lim DJ, Kim SD, Lee SK.Ha SK, et al.J Korean Neurosurg Soc. 2008 Dec;44(6):370-4. doi: 10.3340/jkns.2008.44.6.370. Epub 2008 Dec 31.J Korean Neurosurg Soc. 2008.PMID: 19137081Free PMC article.
Ha SK, Kim SH, Kim DH, Park JY, Lim DJ, Lee SK.Ha SK, et al.J Korean Neurosurg Soc. 2009 Mar;45(3):169-75. doi: 10.3340/jkns.2009.45.3.169. Epub 2009 Mar 31.J Korean Neurosurg Soc. 2009.PMID: 19352479Free PMC article.
Ha SK, Lim DJ, Kang SH, Kim SH, Park JY, Chung YG.Ha SK, et al.Clin Neurol Neurosurg. 2011 Jun;113(5):362-7. doi: 10.1016/j.clineuro.2010.12.003. Epub 2011 Jan 7.Clin Neurol Neurosurg. 2011.PMID: 21216088
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Kim BJ, Choi JI, Ha SK, Lim DJ, Kim SD.Kim BJ, et al. Among authors: ha sk.J Child Neurol. 2014 Dec;29(12):NP189-92. doi: 10.1177/0883073813510357. Epub 2013 Nov 25.J Child Neurol. 2014.PMID: 24282184
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Jung YS, Kim SH, Ha SK, Kim SD, Lim DJ.Jung YS, et al. Among authors: ha sk.Korean J Spine. 2013 Jun;10(2):91-3. doi: 10.14245/kjs.2013.10.2.91. Epub 2013 Jun 30.Korean J Spine. 2013.PMID: 24757467Free PMC article.