About the Authors

Qiuyan Liao

Affiliation Health Behaviors Research Group, School of Public Health, The University of Hong Kong, Hong Kong, China

Wing Sze Wong

wingwong@ied.edu.hk

Affiliation Department of Psychological Studies, The Hong Kong Institute of Education, Hong Kong, China

Richard Fielding

Affiliation Health Behaviors Research Group, School of Public Health, The University of Hong Kong, Hong Kong, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: QL WSW RF. Performed the experiments: QL WSW RF. Analyzed the data: QL WSW RF. Contributed reagents/materials/analysis tools: QL WSW RF. Wrote the paper: QL WSW RF.