Funding for this research was provided by:
African Academy of Sciences (DEL-15-003)
Medical Research Council (MR/R002738/1)
Received: 29 January 2020
Accepted: 15 October 2020
First Online: 14 November 2020
Ethics approval and consent to participate
: The SIBs study from which this review is based was approved by the KEMRI Scientific and Ethics Review Unit (KEMRI/SERU/CGMR-C/102/3545).
: Not applicable.
: All the authors declare that they have no competing interests.