Funding for this research was provided by:
ELMA Foundation (14-F0023)
Received: 18 November 2019
Accepted: 27 October 2020
First Online: 11 November 2020
Ethics approval and consent to participate
: Ethical approval for this study protocol was sought from the University of Zambia Biomedical Research Ethics Committee (UNZA BREC – Reference Number 012-12-16), the National Health Research Authority (NHRA), and from the University of Alabama at Birmingham (UAB). Consent to publish this manuscript was obtained from NHRA. No administrative permissions and/or licenses were acquired to access the data used in this research.
: Not applicable.
: The authors declare that they have no competing interests.