About the Authors

Kiyah J. Duffey, Barry M. Popkin
Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Barry M. Popkin
Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Corresponding Author

popkin@unc.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Contributed reagents/materials/analysis tools: KJD BMP. ICMJE criteria for authorship read and met: KJD BMP. Agree with the manuscript's results and conclusions: KJD BMP. Wrote the first draft of the paper: KJD BMP. Study concept and design, acquisition of data, critical revision of the manuscript for important intellectual content, obtained funding, and study supervision: BMP KJD. Analysis and interpretation of data: KJD BMP. Drafting of the manuscript, statistical expertise, and administrative, technical, or material support: KJD BMP.