Received: 4 January 2019
Accepted: 31 October 2019
First Online: 13 November 2019
Ethics approval and consent to participate
: The study had ethical approval from the Muhimbili University of Health and Allied Sciences Research and Publication Ethical Committee (ref no. MUH/PGS/SAEC/Vol.XIV). All participants provided written informed consent to participate in the study and consented to have de-identified quotes used in the publication.
: Not applicable.
: The authors declare that they have no competing interests.