Received: 23 August 2018
Accepted: 18 January 2019
First Online: 6 February 2019
Ethics approval and consent to participate
: The primary research was approved by the National Commission for Science Technology and Innovation (ref: P/15/8861/4510). The secondary analysis was approved by the Ethics Committee of the Faculty of Health and Medicine at the University of Lancaster (ref: FHMREC16082).
: Participants provided explicit consent for publication of data collected during this study.
: The authors declare that they have no competing interests.
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