1. Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
2. Department of Ophthalmology, Rwanda International Institute of Ophthalmology, Kigali, Rwanda
3. Department of Ophthalmology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
4. Department of Ophthalmology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia