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