Published on in Vol 8 , No 5 (2020) :May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/15407, first published
.

1 Department of Informatics, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, BR
2 Department of Informatics, King's College London, London, GB
*all authors contributed equally