Accepted for Publication: February 5, 2015.
Published Online: May 18, 2015. doi:10.1001/jamapediatrics.2015.0327.
Study concept and design: Kwon, Janz.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Kwon, Janz.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Kwon, Janz, Burns.
Obtained funding: Kwon, Janz, Levy.
Administrative, technical, or material support: Kwon, Janz, Levy.
Study supervision: Kwon.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grants R03 HD078966, R01 DE12101, R01 DE09551, UL1 RR024979, UL1 TR000442, and M01 RR00059 from the National Institutes of Health, the Roy J. Carver Charitable Trust, and Delta Dental of Iowa Foundation.
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.
Additional Contributions: We thank the children, parents, and staff of the Iowa Fluoride Study and the Iowa Bone Development Study. The families who participated in the studies were compensated for their participation.