1. Department of Ophthalmology, Indiana University, Indianapolis, Indiana, United States
2. Department of Ophthalmology, University of Alabama, Birmingham, Alabama, United States
3. Department of Pediatrics, University of Florida, Gainesville, Florida, United States
4. Department of Anatomy and Biology, Santa Fe College, Gainesville, Florida, United States
5. Department of Medicine, Indiana University, Indianapolis, Indiana, United States
6. Department of Ophthalmology, Louisiana State University Eye Center, New Orleans, Louisiana, United States
7. Department of Physiology, Michigan State University, East Lansing, Michigan, United States