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Cha E, Fong L.Cha E, et al. Among authors: fong l.J Clin Oncol. 2011 Sep 20;29(27):3677-85. doi: 10.1200/JCO.2010.34.5025. Epub 2011 Aug 8.J Clin Oncol. 2011.PMID: 21825260Free PMC article.Review.