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Holmes DJ, Austad SN.Holmes DJ, et al. Among authors: austad sn.J Gerontol A Biol Sci Med Sci. 1995 Mar;50(2):B59-66. doi: 10.1093/gerona/50a.2.b59.J Gerontol A Biol Sci Med Sci. 1995.PMID: 7874580Review.