1. School of Public Health, Sun Yat-Sen University, Guangzhou, China; JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
2. Department of General Practice, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
3. JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
4. JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; Editor-in-Chief, Hong Kong Medical Journal