Published on in Vol 6, No 6 (2018): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/9642, first published
.
1 Division of Community Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
2 Department of Medical Specialist, Linköping University, Motala, Sweden
*all authors contributed equally