1. Department of Ophthalmology, George Washington University, Washington, DC, USA 20037
2. California Northstate University, College of Medicine, Elk Grove, CA, USA 95757
3. Department of Ophthalmology, Albany Medical College, Albany, NY, USA 12208
4. Retina Macula Institute, Torrance, CA, USA 90503
5. Jules Eye Institute, University of California, Los Angeles, Los Angeles, USA 90095