1. From the Departments of Ophthalmology and Visual Sciences and 2Pediatrics,
2. From the Departments of Ophthalmology and Visual Sciences and
3. From the Departments of Ophthalmology and Visual Sciences and the 3Interdisciplinary Genetics Program, and the 4Howard Hughes Medical Institute, University of Iowa, Iowa City, Iowa.
4. From the Departments of Ophthalmology and Visual Sciences and 2Pediatrics, the 3Interdisciplinary Genetics Program, and the 4Howard Hughes Medical Institute, University of Iowa, Iowa City, Iowa.