Received: 16 January 2020
Accepted: 6 May 2020
First Online: 14 May 2020
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the College of Medicine Research and Ethics.Committee (COMREC) under research certificate number P.08/18/2449. Permissions to carry out the study was obtained from the District Commissioner (DC) for Mulanje.
: All participants consented for peer review and the publication of the study results.
: The authors declare that they have no competing interests.