| Retina-Vitreous Associates Medical Group |
| Beverly Hills, California, United States, 90211 |
| Retina Group of Florida |
| Hollywood, Florida, United States, 33021-6746 |
| Bascom Palmer Eye Institute |
| Miami, Florida, United States, 33101 |
| Ophthalmic Consultants of Boston |
| Boston, Massachusetts, United States, 02114 |
| Beaumont Eye Institute |
| Royal Oaks, Michigan, United States, 48073-6710 |
| Retina Foundation of Southwest |
| Dallas, Texas, United States, 75231 |
| Vitreoretinal Consultants |
| Houston, Texas, United States, 77030 |
| University of Utah |
| Salt Lake City, Utah, United States, 84132 |