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Edwards RR, Fillingim RB.Edwards RR, et al. Among authors: fillingim rb.J Gerontol A Biol Sci Med Sci. 2001 Mar;56(3):M180-5. doi: 10.1093/gerona/56.3.m180.J Gerontol A Biol Sci Med Sci. 2001.PMID: 11253160