Accepted for Publication: April 23, 2013.
Published Online: September 9, 2013. doi:10.1001/jamaneurol.2013.3263.
Acquisition of data: Fletcher, Huebner, Liu, Mungas, DeCarli.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Fletcher, Raman, Huebner, Liu, Carmichael.
Critical revision of the manuscript for important intellectual content: Fletcher, Mungas, Carmichael, DeCarli.
Statistical analysis: All authors.
Obtained funding: Mungas, DeCarli.
Administrative, technical, or material support: Mungas, DeCarli.
Study supervision: Fletcher, DeCarli.
Conflict of Interest Disclosures: None reported.