1 Department of Maternal Newborn, Child, and Adolescent Health, and Ageing, World Health Organization, Geneva 1202, Switzerland. Electronic address: muzigabam@who.int.
2 Department of Maternal Newborn, Child, and Adolescent Health, and Ageing, World Health Organization, Geneva 1202, Switzerland.
3 University Research Co, Rockville, MD, USA.
4 Department of Maternal and Child Health, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Data and Analytics Section, UNICEF, New York, NY, USA.
5 London School of Hygiene and Tropical Medicine, Faculty of Epidemiology and Population Health, Department of Infectious Disease Epidemiology, London, UK; School of Public Health, University of the Western Cape, Cape Town, South Africa.
6 Child and Community Health Unit, UNICEF, New York, NY, USA.
7 Department of International Health, Johns Hopkins School of Public Health, Baltimore, MD, USA.
8 Data and Analytics Section, UNICEF, New York, NY, USA; Child and Community Health Unit, UNICEF, New York, NY, USA; Department of International Health, Johns Hopkins School of Public Health, Baltimore, MD, USA.