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Chang HJ, Lee JR, Jee BC, Suh CS, Kim SH.Chang HJ, et al. Among authors: suh cs.J Korean Med Sci. 2009 Apr;24(2):262-8. doi: 10.3346/jkms.2009.24.2.262. Epub 2009 Apr 20.J Korean Med Sci. 2009.PMID: 19399268Free PMC article.Clinical Trial.