Funding for this research was provided by:
Foundation for the National Institutes of Health (D43TW010134)
Received: 23 September 2019
Accepted: 2 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Health Research and Ethics committee of the College of Medicine University of Lagos. CMUL/HREC Number: CMUL/HREC/02/18/332.
: Not applicable.
: The authors declare that they have no competing interests.