1. Paducah Retinal Center, Paducah, Kentucky
2. Jaeb Center for Health Research, Tampa, Florida
3. Charlotte Eye, Ear, Nose, and Throat Associates PA, Charlotte, North Carolina
4. Department of Ophthalmology, Loma Linda University Health Care, Loma Linda, California
5. Department of Ophthalmology, University of Florida College of Medicine, Gainesville
6. Jacksonville Health Science Center, Jacksonville, Florida
7. Feinberg School of Medicine, Northwestern University, Chicago, Illinois
8. Retina Consultants of Austin Retina Research Center, Austin, Texas
9. Dell Medical School, University of Texas at Austin
10. Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
11. Joslin Diabetes Center, Beetham Eye Institute, Harvard Department of Ophthalmology, Boston, Massachusetts