Accepted for Publication: June 11, 2014.
Published Online: September 8, 2014. doi:10.1001/jamaneurol.2014.2057.
Study concept and design: Huh, H. J. Kim.
Acquisition, analysis, or interpretation of data: Huh, S.-H. Kim, Hyun, Joung, Park, B.-J. Kim, H. J. Kim.
Drafting of the manuscript: Huh, S.-H. Kim, Park, H. J. Kim.
Critical revision of the manuscript for important intellectual content: Huh, S.-H. Kim, Hyun, Joung, B.-J. Kim, H. J. Kim.
Statistical analysis: Huh, H. J. Kim.
Administrative, technical, and material support: Hyun, Joung.
Study supervision: S.-H. Kim, B.-J. Kim, H. S. Kim.
Conflict of Interest Disclosures: Dr H. J. Kim reported having given talks, consulted, and received honoraria and/or hospitality and/or support for research activities from Bayer Schering Pharma, Biogen Idec, Genzyme, GemVax and KAEL, MedImmune, Merck Serono, Novartis, Teva-Handok, and Union Chimique Belge. No other disclosures were reported.