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Song PS, Hahn JY, Song YB, Choi JH, Choi SH, Kang GH, Ahn KT, Lim WH, Park KW, Kim HS, Gwon HC.Song PS, et al. Among authors: gwon hc.Yonsei Med J. 2012 Sep;53(5):906-14. doi: 10.3349/ymj.2012.53.5.906.Yonsei Med J. 2012.PMID: 22869472Free PMC article.
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