Published Online: November 18, 2013. doi:10.1001/jamapediatrics.2013.3699.
Study concept and design: McElrath, Meeker.
Acquisition of data: McElrath, Meeker.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: All authors.
Obtained funding: Meeker.
Administrative, technical, or material support: McElrath, Meeker.
Study supervision: McElrath, Meeker.
Conflict of Interest Disclosures: None reported.
Funding/Support: Funding for this study was provided by the National Institute of Environmental Health Sciences, National Institutes of Health (grants R01ES018872, P42ES017198, and P30ES017885).
Role of the Sponsor: The National Institute of Environmental Health Sciences had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: We thank Kurtis Kneen, PhD, Scott Clipper, PhD, Gerry Pace, BS, David Weller, BS, and Jennifer Bell, BS, of NSF International in Ann Arbor, Michigan, for urine phthalate analysis, and Russ Hauser, MD, ScD, of the Harvard School of Public Health for guidance on study design.
Correction: This article was corrected online March 18, 2014, for an error in a phthalate metabolite description.