1. Department of Epidemiology Rollins School of Public Health Emory University Atlanta GA USA
2. Trachoma Control Program The Carter Center Addis Ababa Ethiopia
3. Trachoma Control Program The Carter Center Atlanta GA USA
4. Health Promotion and Disease Prevention Core Process The Amhara Regional Health Bureau Bahir Dar Ethiopia
5. Directorate, The Amhara Regional Health Bureau Bahir Dar Ethiopia