African Population and Health Research Center (APHRC), Government of Kenya - Kenya National Bureau of Statistics (KNBS), African Population and Health Research Center (APHRC), African Population and Health Research Center (APHRC), African Population and Health Research Center (APHRC), African Population and Health Research Center (APHRC), United Nations Children Fund and African Population and Health Research Center (APHRC)

University of the Witwatersrand - South African Medical Research Council, University of the Witwatersrand - South African Medical Research Council, University of the Witwatersrand - MRC/Wits Rural Public Health and Health Transitions Research Unit, University of the Witwatersrand - School of Clinical Medicine, African Population and Health Research Center (APHRC), African Population and Health Research Center (APHRC), University of Limpopo, University of Limpopo, Australian National University (ANU), University of the Witwatersrand - South African Medical Research Council, affiliation not provided to SSRN, University of the Witwatersrand - South African Medical Research Council, University of the Witwatersrand - South African Medical Research Council, University of the Witwatersrand - South African Medical Research Council and University of the Witwatersrand - MRC/Wits Rural Public Health and Health Transitions Research Unit