1. Retina Consultants of Texas (Retina Consultants of America), Houston, Texas
2. Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas
3. Retina-Vitreous Associates Medical Group, Los Angeles, California
4. Ophthalmic Consultants of Boston, Boston, Massachusetts
5. Palmetto Retina, West Columbia, South Carolina
6. Retina Care, Arecibo, Puerto Rico
7. Emanuelli Research and Development Center, Arecibo, Puerto Rico
8. Retina Center of New Jersey, Bloomfield
9. Medical Center Ophthalmology Associates, San Antonio, Texas
10. Regeneron Pharmaceuticals, Tarrytown, New York