1. School of Public Health, Sun Yat-Sen University, Guangzhou, China; Department of General Practice, The Second Hospital of Hebei Medical University, Shijiazhuang, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
2. State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
3. Department of Cardiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
4. Department of Clinical Research, Sun Yat-Sen University Cancer Center, Guangzhou, China
5. Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; Centre for Health Education and Health Promotion, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; Editor-in-Chief, Hong Kong Medical Journal