1. East Bay Retina Consultants Inc., Oakland, CA, USA
2. Department of Ophthalmology, University of California, San Francisco, San Francisco, CA, USA
3. Singapore Eye Research Institute, Singapore National Eye Centre, Duke-NUS Medical School, Singapore
4. Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
5. Department of Ophthalmology, Edward S. Harkness Eye Institute, Columbia University College of Physicians and Surgeons, New York, NY, USA