Published Online: December 10, 2012. doi:10.1001/jamapediatrics.2013.437
Author Contributions:Study concept and design: McAnally, Robertson, Strasburger, and Hancox. Acquisition of data: McAnally, Robertson, and Hancox. Analysis and interpretation of data: McAnally and Hancox. Drafting of the manuscript: McAnally, Strasburger, and Hancox. Critical revision of the manuscript for important intellectual content: McAnally and Robertson. Statistical analysis: McAnally and Hancox. Obtained funding: Hancox. Administrative, technical, and material support: Robertson.
Conflict of Interest Disclosures: None reported.
Funding/Support: This research was funded by a grant from the Deputy Vice-Chancellor of Research at the University of Otago.
Role of the Sponsors: The funder had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation, review, or approval of the manuscript.
Additional Contributions: We thank Rob McGee, PhD, for helpful input into the early phases of planning this research.