1. The Carter Center, Atlanta, Georgia;
2. The Carter Center, Bahir Dar, Ethiopia;
3. The Carter Center, Addis Ababa, Ethiopia;
4. International Trachoma Initiative, Addis Ababa, Ethiopia;
5. Amhara National Regional Health Bureau, Bahir Dar, Ethiopia;
6. Dr. Abdu Higher Eye Clinic, Bahir Dar, Ethiopia;
7. International Trachoma Initiative, Atlanta, Georgia;
8. World Health Organization, Geneva, Switzerland