Funding for this research was provided by:
Health Improvement Project Zanzibar
Received: 4 June 2019
Accepted: 2 January 2020
First Online: 9 January 2020
Ethics approval and consent to participate
: Ethical approval for the study was requested from and granted by the Zanzibar Medical Research Ethics Committee prior to the study commencing.
: Participants gave written consent for words and opinions to be published with their names removed.
: The authors declare that they have no competing interests.