1. Department of Ophthalmology, United Christian Hospital, Hong Kong.
2. Department of Ophthalmology, Tseung Kwan O Hospital, Hong Kong.
3. Editor, Hong Kong Medical Journal.
4. Hospital Authority, Hong Kong.
5. Epidemiology Advisor, Hong Kong Medical Journal.
6. Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
7. Social Media Editor, Hong Kong Medical Journal.
8. The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
9. Stanford Center on China's Economy and Institutions, Stanford University, Stanford, United States.
10. Editor-in-Chief, Hong Kong Medical Journal.