1. Department of Molecular Biology and Genetics and the Department of Neuroscience, Howard Hughes Medical Institute.
2. Wilmer Ophthalmologic Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
3. Cullen Eye Institute, the Department of Ophthalmology, and the Institute for Molecular Genetics, Baylor College of Medicine, Houston, TX 77030.
4. Howard Hughes Medical Institute and the Institute for Molecular Genetics, Baylor College of Medicine, Houston, TX 77030. .
5. Department of Biochemistry, Oregon Health Sciences University, Portland, OR 97201.
6. Department of Medical Genetics, Oregon Health Sciences University, Portland, OR 97201.
7. Department of Ophthalmology, Oregon Health Sciences University, Portland, OR 97201.
8. Department of Ophthalmology, Henry Ford Hospital, Detroit, MI 48202.
9. Kresge Eye Institute, Wayne State University School of Medicine, Detroit, MI 48201.
10. Department of Biomedical Sciences, Southern College of Optometry, Memphis, TN 38104.
11. Department of Ophthalmology, University of Illinois College of Medicine, Chicago, IL 60612.