1. From the Department of Ophthalmology, University of Florida College of Medicine, Jacksonville Health Science Center, Jacksonville, Florida; the
2. Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland; the
3. Jaeb Center for Health Research, Tampa, Florida; the
4. Retina Research Center, Austin, Texas; and the
5. Wolfe Eye Clinic, West Des Moines, Iowa.