About the Authors

Yi Song

Affiliation Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China

Hai-Jun Wang

whjun1@bjmu.edu.cn

Affiliation Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China

Jun Ma

Affiliation Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China

Zhiqiang Wang

Affiliations Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China, Centre for Chronic Disease, School of Medicine, University of Queensland, Health Sciences Building, Royal Brisbane & Women’s Hospital, Herston, Queensland, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HJW JM YS. Performed the experiments: HJW JM YS. Analyzed the data: HJW YS ZQW. Contributed reagents/materials/analysis tools: HJW JM YS ZQW. Wrote the paper: YS HJW JM ZQW.