Published on in Vol 5 , No 4 (2018) :Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/10091, first published
.

1 Manchester Academic Health Science Centre, Division of Psychology and Mental Health, School of Health Sciences, University of Manchester, Manchester, GB
2 Greater Manchester Mental Health NHS Foundation Trust, Manchester, GB