1. University of Texas Health Science Center, Houston, Texas, USA
2. Paul L. Foster School of Medicine, Texas Tech University Health Science Center, El Paso, Texas, USA
3. Department of Ophthalmology, Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas, USA
4. Department of Ophthalmology, The University of Jordan, Amman, Jordan
5. Department of Neurology, Houston Methodist Hospital, Houston, Texas, USA
6. Department of Ophthalmology, Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, USA
7. Departments of Ophthalmology, Neurology, and Neurosurgery, Weill Cornell Medicine, New York, USA
8. Department of Ophthalmology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
9. Texas A and M College of Medicine, Bryan, Texas, USA