1. Department of Ophthalmology, Scheie Eye Institute, University of Pennsylvania, Philadelphia, PA 19104.
2. Department of Ophthalmology, University of Florida, Gainesville, FL 32610.
3. Powell Gene Therapy Center, Genetics Institute, and Departments of Pediatrics, Pathology, and Pharmaceutics, University of Florida, Gainesville, FL 32610.
4. Section of Comparative Medicine, Yale University School of Medicine, New Haven, CT 06520.
5. Section of Medical Genetics, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104.
6. James A. Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853.