Nkhoma, Kennedy https://orcid.org/0000-0002-2991-8160
Ahmed, Aabid
Alli, Zipporah
Sherr, Lorraine
Harding, Richard
Article History
Received: 31 July 2018
Accepted: 30 August 2019
First Online: 11 September 2019
Ethics approval and consent to participate
: All participants were provided with informed consent and signed consent form after agreeing to take part in the study. The study was approved by Kenya Medical Research Medical Institute (KEMRI/RES/7/3/1).
: Not applicable
: The authors declare that they have no competing interests.