Text and Data Mining valid from 2018-08-11
Received: 3 April 2018
Accepted: 1 August 2018
First Online: 11 August 2018
Ethics approval and consent to participate
: Permission to carry out this study was sought from the Metropolitan Education Directorate of Northern Region and the headmasters of the schools. The pupils and their parents signed an informed consent before participation in the study. The study protocol was also approved by the Scientific Review Committee of the School of Allied Health Sciences, University for Development Studies, Ghana.
: Not applicable.
: The authors declare that they have no competing interests.
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