Funding for this research was provided by:
Economic and Social Research Council (ES/L001853/2)
Received: 1 June 2018
Accepted: 24 July 2018
First Online: 11 September 2018
Ethics approval and consent to participate
: The IDEAL study was approved by the Wales Research Ethics Committee 5 (reference 13/WA/0405) and the Ethics Committee of the School of Psychology, Bangor University (reference 2014-11684). The IDEAL study has obtained informed consent from participants.
: The authors declare that they have no competing interests.
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