Accepted for Publication: August 4, 2014.
Published Online: October 6, 2014. doi:10.1001/jamapediatrics.2014.1983.
Study concept and design: Halterman, Tremblay, Szilagyi, Butz.
Acquisition, analysis, or interpretation of data: Halterman, Fagnano, Tremblay, Fisher, Wang, Rand, Butz.
Drafting of the manuscript: Halterman, Fagnano, Wang, Butz.
Critical revision of the manuscript for important intellectual content: Halterman, Fagnano, Tremblay, Fisher, Rand, Szilagyi.
Statistical analysis: Fisher, Wang.
Obtained funding: Halterman, Tremblay, Rand, Szilagyi, Butz.
Administrative, technical, or material support: Fagnano, Tremblay, Fisher.
Study supervision: Halterman, Fagnano, Tremblay, Butz.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by grant R01 HL091835 from the National Heart, Lung, and Blood Institute.
Role of the Funder/Sponsor: The National Heart, Lung, and Blood Institute 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.
Correction: This article was corrected on April 30, 2015, to fix an error in Table 2.