Received: 20 May 2019
Accepted: 16 July 2019
First Online: 5 September 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the RHC of Tenkodogo Ethics committee by 31 December 2014. The Ethics Committee waived the need for written informed consent due to illiteracy of most study participants and non-invasive aspect of collected data obtained from routine practice. Only verbal informed consent was required from all study participants. The study was carried out in accordance with the Declaration of Helsinki.
: Not applicable
: The authors declare that they have no competing interests.