1. Nutrition;
2. Biostatistics;
3. Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA;
4. Ifakara Health Institute, Dar es Salaam, Tanzania;
5. Department of Internal Medicine, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania; and
6. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.