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Masternak MM, Al-Regaiey K, Bonkowski MS, Panici J, Sun L, Wang J, Przybylski GK, Bartke A.Masternak MM, et al. Among authors: bartke a.J Gerontol A Biol Sci Med Sci. 2004 Aug;59(8):784-8. doi: 10.1093/gerona/59.8.b784.J Gerontol A Biol Sci Med Sci. 2004.PMID: 15345726