About the Authors

Lin Xu

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China

Chao Qiang Jiang

Affiliation Guangzhou No.12 Hospital, Guangzhou, 510620, China

Kar Keung Cheng

Affiliation Public Health, Epidemiology and Biostatistics, University of Birmingham, Birmingham, UK

Shiu Lun Ryan Au Yeung

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China

Wei Sen Zhang

Affiliation Guangzhou No.12 Hospital, Guangzhou, 510620, China

Tai Hing Lam

hrmrlth@hkucc.hku.hk

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China

Catherine Mary Schooling

Affiliations School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China, School of Urban Public Health, Hunter College and CUNY School of Public Health, New York, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LX CQJ THL KKC SLAY WSZ CMS. Performed the experiments: LX CQJ THL KKC SLAY WSZ CMS. Analyzed the data: LX CMS. Contributed reagents/materials/analysis tools: LX CQJ THL KKC SLAY WSZ CMS. Wrote the paper: LX CMS. Gave final approval of the version to be submitted and any revised version: LX CQJ THL KKC SLAY WSZ CMS.