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Yoon WJ, Yoon YB, Kim YJ, Ryu JK, Kim YT.Yoon WJ, et al. Among authors: kim yj, kim yt.J Korean Med Sci. 2010 Apr;25(4):536-40. doi: 10.3346/jkms.2010.25.4.536. Epub 2010 Mar 19.J Korean Med Sci. 2010.PMID: 20357994Free PMC article.
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