1. Department of Ophthalmology and Visual Sciences, Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States
2. Iowa Lions Eye Bank, Coralville, Iowa, United States
3. Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, California, United States
4. Department of Ophthalmology & Vision Science, School of Medicine, University of California, Davis, Davis, California, United States
5. Department of Ophthalmology, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany