1. Department of Maternal and Child Health, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
2. Columbia University School of Nursing, New York City, NY, USA
3. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
5. Innovations for Poverty Action-Kenya, Nairobi, Kenya
6. Kisumu County Department of Health, Kisumu, Kenya
7. Julius Global Health, Julius Centre for Health Sciences and Primary Care, University Medical Centre, Utrecht, Netherlands