Funding for this research was provided by:
Wellcome Trust (GB) DELTAS Africa Initiative (15-01)
Received: 13 January 2020
Accepted: 13 May 2020
First Online: 29 May 2020
Ethics approval and consent to participate
: This research study was approved by the Medical Research Council of Zimbabwe (ethics number MRCZ/A/2210) and the Joint Research Ethics Committee for the University of Zimbabwe College of Health Sciences and Parirenyatwa Group of Hospitals (ethics number JREC/151/17). All participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.