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Sweet RA, Bennett DA, Graff-Radford NR, Mayeux R; National Institute on Aging Late-Onset Alzheimer's Disease Family Study Group.Sweet RA, et al.Brain. 2010 Apr;133(Pt 4):1155-62. doi: 10.1093/brain/awq001. Epub 2010 Feb 10.Brain. 2010.PMID: 20147454Free PMC article.