1. F.I. Proctor Foundation, University of California, San Francisco, California, USA
2. Department of Ophthalmology, University of California, San Francisco, California, USA
3. Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
4. AVRUC – Retina Consultants of America, Indiana University School of Medicine, Indianapolis, Indiana, USA
5. Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Truhlsen Eye Institute, Omaha, Nebraska, USA
6. Department of Ophthalmology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
7. The Department of Epidemiology, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA