Published on in Vol 7, No 12 (2018): December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/11135, first published
.

1 School of Health Sciences , University of Nottingham, Nottingham , GB
2 Institute of Mental Health, Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham , GB
3 Institute for Mental Health, School of Psychology, University of Birmingham, Birmingham , GB
*all authors contributed equally