Accepted for Publication: February 23, 2012.
Published Online: July 2, 2012. doi:10.1001 /archneurol.2012.394
Author Contributions: Drs Köhne and Stettner contributed equally to this work. Study concept and design: Köhne, Stettner, Hartung, Lehmann, and Kieseier. Acquisition of data: Köhne, Stettner, Jangouk, Dehmel, and Kieseier. Analysis and interpretation of data: Köhne, Stettner, and Kieseier. Drafting of the manuscript: Köhne, Stettner, Lehmann, and Kieseier. Critical revision of the manuscript for important intellectual content: Köhne, Stettner, Jangouk, Dehmel, Hartung, Lehmann, and Kieseier. Statistical analysis: Köhne, Stettner, and Kieseier. Obtained funding: Kieseier. Administrative, technical, and material support: Stettner, Jangouk, Dehmel, Lehmann, and Kieseier. Study supervision: Hartung and Kieseier.
Financial Disclosure: Drs Hartrung and Kieseier have received honoraria for lecturing, travel expense compensation for attending meetings, and financial support for research from Bayer Health Care, Biogen Idec, Merck Serono, Novartis, Sanofi Aventis, and Teva Pharmaceutical Industries.
Additional Contributions: The technical assistance of Zippora Kohne and Birgit Muelders-Opgenoorth is gratefully acknowledged.