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Bäckman L, Jones S, Small BJ, Agüero-Torres H, Fratiglioni L.Bäckman L, et al. Among authors: small bj.J Gerontol B Psychol Sci Soc Sci. 2003 Jul;58(4):P228-36. doi: 10.1093/geronb/58.4.p228.J Gerontol B Psychol Sci Soc Sci. 2003.PMID: 12878651
Jang Y, Borenstein-Graves A, Haley WE, Small BJ, Mortimer JA.Jang Y, et al. Among authors: small bj.J Gerontol B Psychol Sci Soc Sci. 2003 Jul;58(4):S221-4. doi: 10.1093/geronb/58.4.s221.J Gerontol B Psychol Sci Soc Sci. 2003.PMID: 12878655
Lunsman M, Edwards JD, Andel R, Small BJ, Ball KK, Roenker DL.Lunsman M, et al. Among authors: small bj.Psychol Aging. 2008 Dec;23(4):917-27. doi: 10.1037/a0013466.Psychol Aging. 2008.PMID: 19140660Free PMC article.