1. Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
2. Rose-Silverthorne Retinal Degenerations Laboratory, Retina Foundation of the Southwest, Dallas, TX, USA
3. Department of Ophthalmology, Dean McGee Eye Institute, Oklahoma City, OK, USA
4. Department of Ophthalmology, UT Southwestern Medical Center, Dallas, TX, USA