Received: 31 January 2018
Accepted: 19 March 2018
First Online: 23 April 2018
Ethics approval and consent to participate
: The DHS Program collects and manages data in accordance with the research ethics requirements of the U.S Department of Health and Human Services, ensuring that participants provide informed consent and that the data remain anonymous. As this was a secondary analysis of DHS data, no further ethics approval was required. Data used in this study was treated as confidential as per DHS requirements, and respondents remained unidentified.
: Not applicable.
: The authors declare that they have no competing interests.
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