About the Authors

Yinghui Liu

Contributed equally to this work with: Yinghui Liu, Hsin-jen Chen

Affiliation Johns Hopkins Global Center on Childhood Obesity and Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Hsin-jen Chen

Contributed equally to this work with: Yinghui Liu, Hsin-jen Chen

Affiliation Johns Hopkins Global Center on Childhood Obesity and Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Lan Liang

Affiliation Center for Financing, Access and Cost Trends, Agency for Healthcare Research and Quality, Rockville, Maryland, United States of America

Youfa Wang

ywang@jhsph.edu

Affiliation Johns Hopkins Global Center on Childhood Obesity and Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interets exist.

Author Contributions

Conceived and designed the experiments: YW. Performed the experiments: YW. Analyzed the data: YL HC. Contributed reagents/materials/analysis tools: LL YW. Wrote the paper: YH LL CH YW.