1. Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
2. Johns Hopkins Biostatistics Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
3. Department of Ophthalmology, University of Florida, Gainesville
4. Department of Ophthalmology, Indiana University School of Medicine, Indianapolis
5. Department of Ophthalmology, Duke University, Durham, North Carolina
6. Department of Ophthalmology and Visual Sciences, University of Iowa Hospitals & Clinics, Iowa City
7. Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston
8. Department of Ophthalmology, University of California, San Francisco, San Francisco
9. Department of Ophthalmology, Louisiana State University Health Science Center, New Orleans
10. Department of Ophthalmology and Visual Sciences, University of Maryland School of Medicine, Baltimore
11. Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania