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Yeo W, Mok TS, Zee B, Leung TW, Lai PB, Lau WY, Koh J, Mo FK, Yu SC, Chan AT, Hui P, Ma B, Lam KC, Ho WM, Wong HT, Tang A, Johnson PJ.Yeo W, et al.J Natl Cancer Inst. 2005 Oct 19;97(20):1532-8. doi: 10.1093/jnci/dji315.J Natl Cancer Inst. 2005.PMID: 16234567Clinical Trial.