Funding for this research was provided by:
Text and Data Mining valid from 2019-12-01
Received: 26 June 2019
Accepted: 14 November 2019
First Online: 17 December 2019
Ethics approval and consent to participate
: Ethical clearance for this work was obtained from Kenya Medical Research Institute Scientific and Ethical Review Unit (SERU-SSC) and Walter Reed Army Institute of Research (WRAIR) institutional review boards (IRBs) (SSC # 3365, WRAIR #1549B).
: Not applicable
: The authors declare that they have no competing interests.