1. School of Medicine, The University of Jordan, Amman, Jordan.
2. Division of Vascular Surgery, Department of Surgery, Emory University, Atlanta, Georgia, USA.
3. T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA.
4. Department of Ophthalmology, The University of Jordan, Amman, Jordan.
5. Department of Ophthalmology, Colorado University, Colorado, USA.