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Hung KF, Dsen N, Chuang SS, de Villa MG, Chen PK, Lo LJ, Chang SC, Yu CC, Chen YR.Hung KF, et al. Among authors: chen yr, chen pk.Chang Gung Med J. 2003 Jul;26(7):496-502.Chang Gung Med J. 2003.PMID: 14515972Free article.