Published on in Vol 6, No 5 (2018): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/9686, first published
.

1 Institute for Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo , NO
2 Department of Technology Systems, University of Oslo , Oslo , NO
*these authors contributed equally