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Ralph DA, Zhao LP, Aston CE, Manjeshwar S, Pugh TW, DeFreese DC, Gramling BA, Shimasaki CD, Jupe ER.Ralph DA, et al. Among authors: pugh tw.Cancer. 2007 May 15;109(10):1940-8. doi: 10.1002/cncr.22634.Cancer. 2007.PMID: 17436274Free article.