Accepted for Publication: April 22, 2014.
Published Online: August 25, 2014. doi:10.1001/jamaneurol.2014.1297.
Study concept and design: Bredeson, Atkins.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Sanders.
Critical revision of the manuscript for important intellectual content: All authors.
Study supervision: Bredeson, Atkins.
Conflict of Interest Disclosures: None reported.