About the Authors

Rong Huang

Affiliation School of Public Health, The University of Hong Kong, Hong Kong, China

Sai-Yin Ho

syho@hku.hk

Affiliation School of Public Health, The University of Hong Kong, Hong Kong, China

Wing-Sze Lo

Affiliation School of Public Health, The University of Hong Kong, Hong Kong, China

Tai-Hing Lam

Affiliation 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: RH S-YH THL. Performed the experiments: RH S-YH WSL. Analyzed the data: RH. Contributed reagents/materials/analysis tools: WSL S-YH. Wrote the paper: RH.