Article History
Received: 13 March 2019
Accepted: 17 June 2019
First Online: 2 July 2019
Ethics approval and consent to participate
: The protocol and procedures of this study were reviewed and approved by the Biomedical Research Ethics Committee of the University of KwaZulu-Natal (Ref: BREC 463/16) in accordance with the South African national guidelines on Biomedical Research. Further Ethics approval was obtained from the Zambia National Health Research Authority (Ref: MH/101/23/10/1)). Consent to participate was obtained from all respondents. Participation in the study was voluntary and all participants signed written informed consent. The study was cleared for publication by the Zambia National Health Research Authority (NHRA).
: Not applicable.
: The authors declare that they have no competing interests.