Accepted for Publication: February 17, 2014.
Published Online: March 30, 2015. doi:10.1001/jamainternmed.2014.5466.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Davis, Sirovich.
Administrative, technical, or material support: Davis.
Study supervision: All authors.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by award number 5K01AT006162 from the National Institutes of Health (Dr Davis).
Role of the Funder/Sponsor: The National Institutes of Health 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.
Disclaimer: The views expressed herein do not necessarily represent the official views of the National Institutes of Health, the United States Department of Agriculture, the US Environmental Protection Agency, the US Department of Veterans Affairs, or the US government.
Additional Contributions: We thank Todd A. Mackenzie, PhD, Geisel School of Medicine at Dartmouth, for review of statistical analyses and Lieutenant Aaron Niman, US Environmental Protection Agency, for assistance with the Food Commodity Intake Database. Neither received financial compensation.