1. William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California–Davis, Davis, CA, USA
2. Department of Ophthalmology & Vision Science, School of Medicine, University of California–Davis, Sacramento, CA, USA
3. Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California–Davis, Davis, CA, USA
4. Department of Ophthalmology, Cullen Eye Institute, Baylor College of Medicine, Houston, TX, USA
5. Human Genome Sequencing Center and Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
6. Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX, USA