Text and Data Mining valid from 2019-04-18
Received: 4 December 2018
Accepted: 26 March 2019
First Online: 18 April 2019
Ethics approval and consent to participate
: No ethics approval was sought for this article. The data and information contained in this report is a synthesis of existing collected and analysed data, most of which is available from public sources, including the data bases of the World Health Organisation and Demographic and Health Surveys and demographic data through UN Habitat.
: Not applicable.
: The authors declare that they have no competing interests.