Accepted for Publication: August 17, 2012.
Published Online: December 17, 2012. doi:10.1001/2013.jamaneurol.409
Author Contributions:Study concept and design: Schirmer, Rothhammer, Hemmer, and Korn. Acquisition of data: Schirmer, Rothhammer, and Korn. Analysis and interpretation of data: Schirmer, Rothhammer, and Korn. Drafting of the manuscript: Schirmer and Korn. Critical revision of the manuscript for important intellectual content: Schirmer, Rothhammer, Hemmer, and Korn. Statistical analysis: Schirmer, Rothhammer, and Korn. Obtained funding: Schirmer, Hemmer, and Korn. Administrative, technical, and material support: Rothhammer, Hemmer, and Korn. Study supervision: Korn.
Conflict of Interest Disclosures: None reported.
Funding/Support: Dr Schirmer was supported by a Du Pré Grant of the Multiple Sclerosis International Federation and intramural funding of the medical faculty of the Technische Universität München. Dr Korn is the recipient of a Heisenberg grant from the DFG and is supported by other grants of the DFG. Dr Hemmer was supported by a grant from the German Ministry for Education and Research (“German Competence Network Multiple Sclerosis,” Control-MS).
Additional Contributions: We thank Verena Grummel and Tobias Keiner for skillful technical assistance.