Received: 24 November 2020
Accepted: 24 August 2021
First Online: 6 September 2021
: Ethical approval was obtained from The Ethics and Research Committee of Kenyatta National Hospital and the University of Nairobi (KNH/UoN ERC P761/11/2018). Only participants who give written consent were included in the study.
: Not applicable.
: The authors declare that there are no competing interests.