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Tun PA, Miller-Martinez D, Lachman ME, Seeman T.Tun PA, et al.Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2013;20(3):320-38. doi: 10.1080/13825585.2012.707173. Epub 2012 Aug 9.Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2013.PMID: 22873285Free PMC article.