1. 2018 Revision of World Urbanization Prospects|Multimedia Library – United Nations Department of Economic and Social Affairs. https://www.un.org/development/desa/publications/2018-revision-of-world-urbanization-prospects.html. Accessed December 26, 2019.
2. Risk factors for infectious diseases in urban environments of Sub-Saharan Africa: a systematic review and critical appraisal of evidence;Boyce;Trop Med Infect Dis,2019
3. United Nations. The World’s Cities in 2016: Data Booklet. Econ Soc Aff. 2016:29. doi:10.18356/8519891f-en.
4. Urban health: major opportunities for improving global health outcomes, despite persistent health inequities. https://www.who.int/news-room/detail/31-03-2016-urban-health-major-opportunities-for-improving-global-health-outcomes-despite-persistent-health-inequities. Accessed December 26, 2019.
5. The slowing of sub-Saharan Africa's urbanization: evidence and implications for urban livelihoods;Potts;Environ Urbanizat,2009