1. National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
2. National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, USA
3. Helen Keller International, Dar es Salaam, Tanzania
4. Tanzania Food and Nutrition Centre, Dar es Salaam, Tanzania
5. SANKU, Project Healthy Children, Dar es Salaam, Tanzania
6. National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
7. Tanzania National Bureau of Statistics, Dodoma, Tanzania
8. National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
9. Tanzania Ministry of Health, Dodoma, Tanzania Emily Teachout and Jorge Rosenthal are co-first authors.