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2. The Mayo Clinic Study of Aging;Roberts;Design and sampling, participation, baseline measures and sample characteristics,2008
3. Mild cognitive impairment;Gauthier;Lancet,2006
4. Prevalence of depression among older Americans;Steffens;The Aging, Demographics and Memory Study,2009
5. Depressive symptoms, vascular disease, and mild cognitive impairment;Barnes;Findings from the Cardiovascular Health Study,2006