1. Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California;
2. Francis I. Proctor Foundation, University of California, San Francisco, San Francisco, California;
3. The Carter Center, Atlanta, Georgia;
4. Rollins School of Public Health, Emory University, Atlanta, Georgia;
5. Division of Epidemiology, School of Public Health, University of California, Berkeley, Berkeley, California
6. The Carter Center Ethiopia, Addis Ababa, Ethiopia;
7. Amhara Regional Health Bureau, Bahir Dar, Ethiopia;