Received: 30 October 2019
Accepted: 1 April 2020
First Online: 8 April 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from the Committee on Human Research Publication and Ethics, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana and KATH (reference CHRPE/AP/054/18). Blood samples were collected from the participants only after an informed consent was given by their parents/guardians.
: Not applicable.
: The authors declare that they have no competing interests.