Published on in Vol 8, No 7 (2020): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/15896, first published
.
1 SINTEF, Trondheim, Norway
2 YOUSE GmbH, München, Germany
3 Universitat Politècnica de València, València, Spain
4 Instituto de Investigación Sanitaria La Fe, València, Spain