1. Charlotte Eye, Ear, Nose & Throat Associates, Charlotte, North Carolina
2. Jaeb Center for Health Research, Tampa, Florida
3. Feinberg School of Medicine, Northwestern University, Chicago, Illinois
4. Retina Research Center, Austin, Texas
5. Dell Medical School, University of Texas, Austin
6. Retina Associates of Southern California, Huntington Beach
7. Palmetto Retina Center, Columbia, South Carolina
8. Department of Ophthalmology, University of Pennsylvania, Philadelphia
9. Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
10. Joslin Diabetes Center, Beetham Eye Institute, Department of Ophthalmology, Harvard University, Boston, Massachusetts