1. From the Ophthalmic Genetics and Visual Function Branch and
2. the Division of Epidemiology and Clinical Applications, National Eye Institute, Bethesda, Maryland; and
3. the Section for Translational Research in Retinal and Macular Degeneration, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, Maryland.
4. From the Ophthalmic Genetics and Visual Function Branch and the 3Section for Translational Research in Retinal and Macular Degeneration, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, Maryland.