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Yen CH, Chen SJ, Liu JT, Tseng YF, Lin PT.Yen CH, et al. Among authors: chen sj.Biomed Res Int. 2013;2013:809234. doi: 10.1155/2013/809234. Epub 2013 Nov 25.Biomed Res Int. 2013.PMID: 24371832Free PMC article.Clinical Trial.