About the Authors

Eric P. F. Chow

Affiliation The Kirby Institute, University of New South Wales, Sydney, Australia

Ka I. Iu

Affiliation The Kirby Institute, University of New South Wales, Sydney, Australia

Xiaoxing Fu

fuxiaoxing@126.com (XF); lzhang@kirby.unsw.edu.au (LZ)

Affiliation School of Sociology and Population Studies, Renmin University of China, Beijing, China

David P. Wilson

Affiliation The Kirby Institute, University of New South Wales, Sydney, Australia

Lei Zhang

fuxiaoxing@126.com (XF); lzhang@kirby.unsw.edu.au (LZ)

Affiliation The Kirby Institute, University of New South Wales, Sydney, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EPFC DPW LZ. Performed the experiments: EPFC KII XF. Analyzed the data: EPFC KII. Contributed reagents/materials/analysis tools: EPFC LZ. Wrote the paper: EPFC KII DPW LZ.