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Kim SS, Hwang JH, Choi CW, Shim JW, Chang YS, Park WS, Oh CK.Kim SS, et al. Among authors: chang ys.J Korean Med Sci. 2003 Oct;18(5):637-40. doi: 10.3346/jkms.2003.18.5.637.J Korean Med Sci. 2003.PMID: 14555813Free PMC article.
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