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Behrens MI, Silva M, Salech F, Ponce DP, Merino D, Sinning M, Xiong C, Roe CM, Quest AF.Behrens MI, et al. Among authors: ponce dp.J Gerontol A Biol Sci Med Sci. 2012 Oct;67(10):1036-40. doi: 10.1093/gerona/glr258. Epub 2012 Feb 24.J Gerontol A Biol Sci Med Sci. 2012.PMID: 22367434Free PMC article.