Funding for this research was provided by:
Fogarty International Center (D43TW010138)
Received: 6 March 2019
Accepted: 1 July 2019
First Online: 31 July 2019
Ethics approval and consent to participate
: Kilimanjaro Christian Medical University College Research Ethics Committee reviewed the research proposal (Proposal Number 815) for technical and ethical issues. The committee approved the research (Certificate Number 952). Research assistants explicitly explained the study objectives to participants. Participants provided written informed consent before participation. To observe confidentiality, we used unique identifier instead of names.
: Not applicable.
: The authors declare that they have no competing interests.