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Lee JH, Park NH, Keum DY, Choi SY, Kwon KY, Cho CH.Lee JH, et al. Among authors: keum dy.J Korean Med Sci. 2007 Apr;22(2):258-61. doi: 10.3346/jkms.2007.22.2.258.J Korean Med Sci. 2007.PMID: 17449934Free PMC article.Clinical Trial.
Lee SH, Kim JB, Park NH, Keum DY, Kim YH.Lee SH, et al. Among authors: keum dy.Ann Thorac Surg. 2012 Oct;94(4):e103-4. doi: 10.1016/j.athoracsur.2012.03.106.Ann Thorac Surg. 2012.PMID: 23006716
Park N, Hashmi ZA, Kim J, Lee J, Keum D, Yoon PD, Choi S.Park N, et al.J Card Surg. 2009 Jul-Aug;24(4):476-9. doi: 10.1111/j.1540-8191.2009.00891.x.J Card Surg. 2009.PMID: 19583625