Received: 27 May 2018
Accepted: 19 November 2018
First Online: 13 December 2018
Ethics approval and consent to participate
: Administrative permissions were required and obtained from the DHS program to access the data used in this study. Thus, we made a secondary use of DHS data. Therefore, our study did not require a formal ethics approval and the study complied with Maastricht University code of ethics for research in the social and behavioral sciences involving human participants, and also with the national guidelines ( nietWMOplichtig onderzoek or the Medical Research Involving Human Subjects Act (WMO) Link: ExternalRef removed and ExternalRef removed
: Not applicable
: The authors declare that they have no competing interests.
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