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Rikke BA, Yerg JE 3rd, Battaglia ME, Nagy TR, Allison DB, Johnson TE.Rikke BA, et al.J Gerontol A Biol Sci Med Sci. 2004 Feb;59(2):118-25. doi: 10.1093/gerona/59.2.b118.J Gerontol A Biol Sci Med Sci. 2004.PMID: 14999024