About the Authors
- Qiuyan Liao
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Affiliation Health Behaviour Research Group, Department of Community Medicine, School of Public Health, The University of Hong Kong, Hong Kong Special Administrative Region, China
- Benjamin Cowling
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Affiliation Infectious Diseases Group, Department of Community Medicine, School of Public Health, The University of Hong Kong, Hong Kong Special Administrative Region, China
- Wing Tak Lam
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Affiliation Health Behaviour Research Group, Department of Community Medicine, School of Public Health, The University of Hong Kong, Hong Kong Special Administrative Region, China
- Man Wai Ng
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Affiliation Infectious Diseases Group, Department of Community Medicine, School of Public Health, The University of Hong Kong, Hong Kong Special Administrative Region, China
- Richard Fielding
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* E-mail: fielding@hkusua.hku.hk
Affiliation Health Behaviour Research Group, Department of Community Medicine, School of Public Health, The University of Hong Kong, Hong Kong Special Administrative Region, China
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Analyzed the data: QL. Wrote the paper: QL. Planned the study: RF, BC. Guided data analysis: RF BC WTL. Interpretation of the data: RF BC WTL. Made critical revisions of the manuscript: RF, BC. Contributed to the design of the survey instrument: RF QL BC WTL MWN. Coordinated the telephone interview: MWN. Managed the dataset: MWN.