1. Carolina Retina Center PA, Columbia, South Carolina
2. Jaeb Center for Health Research, Tampa, Florida
3. Feinberg School of Medicine, Northwestern University, Chicago, Illinois
4. Joslin Diabetes Center, Beetham Eye Institute, Department of Ophthalmology, Harvard University, Boston, Massachusetts
5. Charlotte Eye, Ear, Nose, and Throat Associates PA, Charlotte, North Carolina
6. Paducah Retinal Center, Paducah, Kentucky
7. Retina Research Center, Austin, Texas
8. Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
9. Elman Retina Group PA, Baltimore, Maryland
10. National Eye Institute, National Institutes of Health, Bethesda, Maryland
11. Florida Retina Consultants, Lakeland
12. Southeast Retina Center PC, Augusta, Georgia