Accepted for Publication: July 15, 2014.
Published Online: October 27, 2014. doi:10.1001/jamapediatrics.2014.1691.
Study concept and design: Lau, Adams, Irwin.
Acquisition, analysis, or interpretation of data: Lau, Park, Boscardin.
Drafting of the manuscript: Lau, Adams, Park, Irwin.
Critical revision of the manuscript for important intellectual content: Adams, Park, Boscardin, Irwin.
Statistical analysis: Lau, Boscardin.
Obtained funding: Park, Irwin.
Administrative, technical, or material support: Lau, Park, Irwin.
Study supervision: Adams, Irwin.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grants U45MC 00002 and U45MC 00023 from the Maternal and Child Health Bureau, Health Resources and Services Administration, US Department of Health and Human Services, and University of California, San Francisco, Clinical and Translational Science Institute grant UL1 TR000004 from the National Center for Advancing Translational Sciences, National Institutes of Health.
Role of the Funder/Sponsor: The funding sources 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.