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Blalock SJ, Roberts AW, Lauffenburger JC, Thompson T, O'Connor SK.Blalock SJ, et al.Med Care Res Rev. 2013 Jun;70(3):235-66. doi: 10.1177/1077558712459215. Epub 2012 Oct 2.Med Care Res Rev. 2013.PMID: 23035056Free PMC article.Review.