Burnett, Rosemary J., Nonhlanhla R. Dlamini, Johanna C. Meyer, Lucy Fernandes, Bontle R. Motloung, Tshepiso H. Ndlovu, Hlamarisa A. Simango, Dan K. Kibuuka, Carine Dochez, Diedericks N. Montwedi, Varsetile V. Nkwinika, and M. Jeffrey Mphahlele. “Progress towards Obtaining Valid Vaccination Coverage Data in South Africa”. South African Journal of Science 115, no. 5/6 (May 29, 2019). Accessed August 8, 2022. https://sajs.co.za/article/view/6060.