Published on in Vol 8, No 12 (2020): December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/22898, first published
.
1 Department of Electronics, Telecommunications and Informatics, Institute of Electronics and Informatics Engineering of Aveiro, University of Aveiro, Aveiro, Portugal
2 Department of Information and Communications Technologies, University of A Coruña, A Coruña, Spain
*these authors contributed equally