1. Guangdong Eye Institute, Guangdong Academy of Medical Sciences, Department of Ophthalmology, Guangdong General Hospital, Guangzhou, China
2. Singapore Eye Research Institute, Singapore National Eye Centre, Singapore
3. Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
4. Ophthalmology & Visual Sciences Academic Clinical Program, Duke–National University of Singapore Medical School, Singapore
5. Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore