1. Faculty of Medicine, American University of Beirut, Beirut, Lebanon
2. Department of Anatomy and Regenerative Biology, George Washington University, Washington, DC, USA
3. Department of Surgery, American University of Beirut, Beirut, Lebanon
4. Lebanese Health Society, Beirut, Lebanon
5. Department of Anatomy, Cell Biology, and Physiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
6. Eye Institute, National Institutes of Health, Bethesda, MD, USA