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Sabbagh M, Malek-Ahmadi M, Levenson I, Sparks DL.Sabbagh M, et al. Among authors: sparks dl.J Alzheimers Dis. 2013;33(1):111-6. doi: 10.3233/JAD-2012-121015.J Alzheimers Dis. 2013.PMID: 22914592Free PMC article.