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Smith PJ, Blumenthal JA, Babyak MA, Georgiades A, Sherwood A, Sketch MH Jr, Watkins LL.Smith PJ, et al. Among authors: blumenthal ja.Am Heart J. 2007 Jan;153(1):133-9. doi: 10.1016/j.ahj.2006.10.016.Am Heart J. 2007.PMID: 17174651Free PMC article.