Funding for this research was provided by:
Belgian scientific policy (SR/0/0/113)
Fonds Marc VERVENNE
Received: 29 April 2019
Accepted: 21 May 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: Permission was obtained from the relevant authorities (<i>Ministère provincial de la santé du Nord Kivu</i>) to exploit the anonymous health data collected routinely by health centres.
: All co-authors have agreed to the submission of the article for publication.
: The authors have no competing interests to declare.