1. Vitreous Retina Macula Consultants of New York, New York
2. Department of Ophthalmology, New York University School of Medicine, New York
3. Retina Service, Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts
4. California Retina Consultants, Santa Barbara
5. Regeneron Pharmaceuticals Inc, Tarrytown, New York