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Neuroimaging findings in twins discordant for Alzheimer's disease.
Pedersen NL, Miller BL, Wetherell JL, Vallo J, Toga AW, Knutson N, Mehringer CM, Small GW, Gatz M. Pedersen NL, et al. Dement Geriatr Cogn Disord. 1999 Jan-Feb;10(1):51-8. doi: 10.1159/000017097. Dement Geriatr Cogn Disord. 1999. PMID: 9844037 Clinical Trial.