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Tan TY, Tseng MC, Chang KC.Tan TY, et al. Among authors: chang kc.Chang Gung Med J. 2004 Nov;27(11):801-7.Chang Gung Med J. 2004.PMID: 15796255Free article.
Chang KC, Tseng MC, Tan TY, Liou CW.Chang KC, et al.J Formos Med Assoc. 2006 Apr;105(4):310-7. doi: 10.1016/S0929-6646(09)60122-4.J Formos Med Assoc. 2006.PMID: 16618611Free article.