1. Department of Ophthalmology, Addis Ababa University, Addis Ababa, Ethiopia
2. Department of Ophthalmology, Mekele University, Mekele, Ethiopia
3. MRC-ET Advanced Laboratory, Addis Ababa, Ethiopia
4. MCM Eye Unit, MyungSung Medical College (MMC), Addis Ababa, Ethiopia
5. Massachusetts Eye and Ear, Schepens Eye Research Institute, Harvard Medical School, Boston, Massachusetts, USA
6. Sight for Souls, Bellevue, Washington, USA