About the Authors

Gang Li

Affiliation Institution of Chronic Disease Control and Prevention, Beijing Center for Diseases Control and Prevention, Beijing, China

Huanhuan Hu

Affiliation Laboratory of Exercise Epidemiology, Graduate School of Sport Sciences, Waseda University, Tokorozawa, Japan

Zhong Dong

Affiliation Institution of Chronic Disease Control and Prevention, Beijing Center for Diseases Control and Prevention, Beijing, China

Takashi Arao

tarao@waseda.jp

Affiliation Laboratory of Exercise Epidemiology, Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GL HHH ZD TA. Performed the experiments: GL ZD HHH. Analyzed the data: GL HHH TA. Contributed reagents/materials/analysis tools: GL HHH ZD TA. Wrote the manuscript: GL HHH TA.