Accepted for Publication: June 13, 2014.
Published Online: December 1, 2014. doi:10.1001/jamaneurol.2014.2077.
Study concept and design: Kilic, Kurne, Tan.
Acquisition, analysis, or interpretation of data: Kilic, Saatci, Tan.
Drafting of the manuscript: Kilic, Kurne, Tan.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Kilic, Tan.
Obtained funding: Kilic, Tan.
Administrative, technical, or material support: Kilic, Kurne, Tan.
Study supervision: Kilic, Kurne, Tan.
Conflict of Interest Disclosures: None reported.