[1
]Centre for Health Behaviours Research, JC School of Public Health and Primary Care,
Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, People’s Republic
of China
[2
]Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People’s
Republic of China
[3
]Department of Early Childhood Education, Faculty of Education and Human Development,
The Education University of Hong Kong, Hong Kong, Hong Kong SAR
[4
]AIDS Concern, Hong Kong, People’s Republic of China
[5
]School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China