Published on in Vol 8, No 11 (2020): November
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/21543, first published
.
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1 University of Oulu, Oulu, Finland
2 University of Siegen, Siegen, Germany
3 University of Manchester, Manchester, United Kingdom
4 University of Tokyo, Tokyo, Japan