1. Behavioral, Epidemiological & Clinical Sciences Division, FHI 360, Durham, NC, USA;
2. Reproductive, Maternal, Newborn & Child Health Division, FHI 360, Durham, NC, USA;
3. Health Services Research Division, FHI 360, Durham, NC, USA;
4. Vanderbilt Institute for Global Health, Vanderbilt University Medical Center, Nashville, TN, USA;
5. Friends in Global Health, Maputo, Mozambique