1. The Department of Ophthalmology, California Pacific Medical Center, San Francisco, CA, USA
2. The Department of Ophthalmology, Stanford University School of Medicine, Stanford, CA, USA
3. The Francis I. Proctor Foundation, UCSF School of Medicine, San Francisco, CA, USA
4. Retina Consultants of Orange County, Fullerton, CA, USA
5. OHSU-PSU School of Public Health, and VA Portland Health Care System, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA
6. Division of Ophthalmology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa