1 School of Public Health, University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia.
2 School of Public Health, University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China.
3 School of Nursing, Hong Kong Polytechnic University, Hong Kong Special Administrative Region, People's Republic of China.
4 Department of Microbiology, University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China.
5 School of Veterinary Science WHO Collaborating Centre for Children Environmental Health, Queensland Children's Medical Research Institute, University of Queensland, Brisbane.
6 Research School of Population Health, Australian National University, Canberra, Australian Capital Territory, Australia.
7 School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia.