1. Department of Ophthalmology, Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas, USA
2. School of Medicine, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
3. Department of Ophthalmology, Community Retina Group, Houston, Texas, USA
4. Departments of Ophthalmology, Neurology, and Neurosurgery, Weill Cornell Medicine, New York, New York, USA
5. Department of Ophthalmology, University of Texas Medical Branch, Galveston, Texas, USA
6. MD Anderson Cancer Center, University of Texas, Houston, Texas, USA
7. Texas A and M College of Medicine, Bryan, Texas, USA