Accepted for Publication: February 10, 2012.
Author Contributions:Study concept and design: Ringman, Cummings, and Cole. Acquisition of data: Ringman and Geschwind. Analysis and interpretation of data: Ringman, Elashoff, Geschwind, Welsh, Gylys, Lee, and Cole. Drafting of the manuscript: Ringman, Elashoff, and Cummings. Critical revision of the manuscript for important intellectual content: Ringman, Elashoff, Geschwind, Welsh, Gylys, Lee, and Cole. Statistical analysis: Elashoff and Lee. Obtained funding: Cummings. Administrative, technical, and material support: Ringman, Welsh, Gylys, and Cole. Study supervision: Geschwind and Gylys.
Financial Disclosure: None reported.
Funding/Support: This study was supported by Public Health Services K08 AG-22228, California Department of Health Services 04-35522, Alzheimer's Disease Research Center Grant P50 AG-16570 from the National Institute on Aging, the Easton Consortium for Alzheimer's Disease Drug Discovery and Biomarkers, the General Clinical Research Centers Program M01-RR00865, the Sidell Kagan Foundation, and the Shirley and Jack Goldberg Trust.