Received: 13 August 2018
Accepted: 22 April 2019
First Online: 3 May 2019
Ethics approval and consent to participate
: The study was approved by the Institutional Review Boards of Kwame Nkrumah University of Science and Technology. Administrative permissions were granted by hospitals. All participants gave written consent for participation. A written consent to participate was obtained from the parents/guardians of the minors included in this study.
: Not applicable.
: The authors declare that they have no competing interests.
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