Published on in Vol 7, No 3 (2020): Jul-Sep
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18171, first published
.
1 Department of Nutrition and Public Health, Faculty of Health and Sports Sciences, University of Agder, Kristiansand, Norway
2 Department of Marketing, Innovation and Organisation, Ghent University, Ghent, Belgium