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Koh WJ, Kwon OJ, Suh GY, Chung MP, Kim H, Lee NY, Kim TS, Lee KS.Koh WJ, et al.J Korean Med Sci. 2004 Apr;19(2):167-71. doi: 10.3346/jkms.2004.19.2.167.J Korean Med Sci. 2004.PMID: 15082886Free PMC article.Clinical Trial.
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