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Teng CI, Ing CK, Chang HY, Chung KP.Teng CI, et al. Among authors: chang hy.J Formos Med Assoc. 2007 Jun;106(6):475-84. doi: 10.1016/S0929-6646(09)60297-7.J Formos Med Assoc. 2007.PMID: 17588841Free article.