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Tang TC, Chuang WY, Chang H.Tang TC, et al. Among authors: chang h.J Cancer Res Ther. 2013 Jul-Sep;9(3):534-6. doi: 10.4103/0973-1482.119373.J Cancer Res Ther. 2013.PMID: 24126003Free article.
Chang H, Yeh HC, Su YC, Lee MH.Chang H, et al.J Chin Med Assoc. 2008 Nov;71(11):579-82. doi: 10.1016/S1726-4901(08)70173-4.J Chin Med Assoc. 2008.PMID: 19015057Free article.