1. School of Public Health, Sun Yat-Sen University, Guangzhou, China; Department of General Practice, The Second Hospital of Hebei Medical University, Shijiazhuang, China; Usher Institute, Deanery of Molecular, Genetic and Population Health Sciences, The University of Edinburgh, Scotland, United Kingdom
2. State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
3. Department of General Practice, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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