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Kim BK, Ko YG, Oh S, Kim JS, Kang WC, Jeon DW, Yang JY, Choi D, Hong MK, Ahn T, Jang Y.Kim BK, et al. Among authors: ahn t.Yonsei Med J. 2010 Nov;51(6):823-31. doi: 10.3349/ymj.2010.51.6.823.Yonsei Med J. 2010.PMID: 20879046Free PMC article.Clinical Trial.
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