Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1148933)
Text and Data Mining valid from 2019-10-11
Received: 1 May 2019
Accepted: 3 September 2019
First Online: 11 October 2019
Ethics approval and consent to participate
: Approval by specific research ethics committees is waived for studies that use publicly available data such as the Demographic and Health Surveys (DHS). Research ethics approval and consent were secured prior to DHS data collection, with confidentiality guaranteed at all stages.
: Not applicable.
: The authors declare that they have no competing interests.