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Yun HE, Han MA, Kim KS, Park J, Kang MG, Ryu SY.Yun HE, et al. Among authors: ryu sy.J Prev Med Public Health. 2010 Jul;43(4):309-18. doi: 10.3961/jpmph.2010.43.4.309.J Prev Med Public Health. 2010.PMID: 20689357Free article.Korean.
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Kim HM, Park J, Ryu SY, Kim J.Kim HM, et al. Among authors: ryu sy.Diabetes Care. 2007 Mar;30(3):701-6. doi: 10.2337/dc06-1400.Diabetes Care. 2007.PMID: 17327344
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