1. Department of Ophthalmology Duke University Durham NC USA
2. Department of Ophthalmology Bugando Medical Center Mwanza Tanzania
3. Center for Global Health Weill Cornell Medical College New York NY USA
4. Department of Medicine Weill Bugando School of Medicine Mwanza Tanzania
5. Mwanza Interventions Trial Unit Mwanza Tanzania
6. Division of Biostatistics and Epidemiology Department of Healthcare Policy & Research Weill Cornell Medicine New York NY USA
7. Department of Ophthalmology Weill Cornell Medical College New York NY USA