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Yeh YC, Lin TF, Chang HC, Chan WS, Wang YP, Lin CJ, Sun WZ.Yeh YC, et al. Among authors: chang hc.J Formos Med Assoc. 2009 Jul;108(7):548-53. doi: 10.1016/S0929-6646(09)60372-7.J Formos Med Assoc. 2009.PMID: 19586828Free article.Clinical Trial.