Received: 8 October 2018
Accepted: 3 January 2019
First Online: 15 January 2019
Ethics approval and consent to participate
: This study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the Faculty of Science and Technology Ethics Committee, Anglia Ruskin University (FST/FREP/15/567).Written informed consent was obtained from all individual participants included in the study.
: As part of the written informed consent procedure, all participants were duly made aware (as part of both the study briefing and information sheet) that the study results may be published. As such, consent for publication was included as part of this process.
: The authors declare that they have no competing interests.
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