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Fabbri E, An Y, Schrack JA, Gonzalez-Freire M, Zoli M, Simonsick EM, Guralnik JM, Boyd CM, Studenski SA, Ferrucci L.Fabbri E, et al. Among authors: schrack ja.J Gerontol A Biol Sci Med Sci. 2015 Nov;70(11):1297-303. doi: 10.1093/gerona/glu209. Epub 2014 Nov 18.J Gerontol A Biol Sci Med Sci. 2015.PMID: 25409892Free PMC article.