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Endogenous Hormones and Prostate Cancer Collaborative Group; Roddam AW, Allen NE, Appleby P, Key TJ.Endogenous Hormones and Prostate Cancer Collaborative Group, et al.J Natl Cancer Inst. 2008 Feb 6;100(3):170-83. doi: 10.1093/jnci/djm323. Epub 2008 Jan 29.J Natl Cancer Inst. 2008.PMID: 18230794Free PMC article.