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Duivenvoorde LP, van Schothorst EM, Swarts HJ, Keijer J.Duivenvoorde LP, et al. Among authors: swarts hj.J Gerontol A Biol Sci Med Sci. 2015 Mar;70(3):282-93. doi: 10.1093/gerona/glu027. Epub 2014 Mar 10.J Gerontol A Biol Sci Med Sci. 2015.PMID: 24615069