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Archer CR, Royle N, South S, Selman C, Hunt J.Archer CR, et al. Among authors: hunt j.J Gerontol A Biol Sci Med Sci. 2009 Sep;64(9):956-9. doi: 10.1093/gerona/glp069. Epub 2009 Jun 5.J Gerontol A Biol Sci Med Sci. 2009.PMID: 19502592Free PMC article.Review.