Received: 22 April 2020
Accepted: 4 August 2020
First Online: 18 August 2020
Ethics approval and consent to participate
: The study protocol and conduct adhered to the principles laid down in the Declaration of Helsinki. Ethical clearance was obtained from the Lagos State Ministry of Health, Nigeria. Written informed consent was obtained from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.