Received: 11 December 2017
Accepted: 24 June 2019
First Online: 5 July 2019
Ethics approval and consent to participate
: Ethical approval to conduct this study was granted the scientific and ethical review board of the Northwest Regional delegation for Health, Cameroon under the approval number 2016/10/721/NW/RDPH/SP. Authorisations was obtained from the service heads of the Oku District Hospital and the Kevu Integrated Health Center, where this study was conducted.
: Not applicable.
: The authors declare that they have no competing interest.