Accepted for Publication: January 9, 2012.
Published Online: June 25, 2012. doi:10.1001/archneurol.2012.21
Author Contributions:Study concept and design: Zufall, Pyrski, Weiss, and Leinders-Zufall. Acquisition of data: Pyrski and Weiss. Analysis and interpretation of data: Zufall, Pyrski, and Leinders-Zufall. Drafting of the manuscript: Zufall. Critical revision of the manuscript for important intellectual content: Zufall, Pyrski, Weiss, and Leinders-Zufall. Obtained funding: Zufall and Leinders-Zufall. Administrative, technical, and material support: Zufall and Leinders-Zufall. Study supervision: Zufall and Leinders-Zufall.
Financial Disclosure: None reported.
Funding/Support: This study was supported by grants SFB 530 and SFB 894 from the Deutsche Forschungsgemeinschaft (Drs Zufall and Leinders-Zufall) and by the Volkswagen Foundation (Dr Leinders-Zufall).
Additional Contributions: We thank our colleagues who participated in the work summarized herein and apologize to those whose work we could not cite owing to space limitations. Gabriele Moerschbaecher provided administrative help.