Accepted for Publication: April 15, 2014.
Published Online: July 14, 2014. doi:10.1001/jamaneurol.2014.1214.
Study concept and design: Ascherio.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Fitzgerald.
Critical revision of the manuscript for important intellectual content: O’Reilly, Falcone, McCullough, Park, Kolonel, Ascherio.
Statistical analysis: Fitzgerald, O’Reilly, Ascherio.
Obtained funding: Kolonel, Ascherio.
Administrative, technical, or material support: O’Reilly, Falcone, McCullough, Park, Kolonel.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by grant R01 NS045893 from the National Institute of Neurological Diseases and Stroke, grants P01 CA87969 and P01 CA055075 from the National Cancer Institute, and a grant from the ALS Therapy Alliance Foundation.
Role of the Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: We acknowledge the cohort participants and Leslie Unger, BA (Department of Nutrition, Harvard School of Public Health), for administrative support. She did not receive compensation from a funding sponsor for her contribution.