Published on in Vol 6, No 2 (2018): February
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/8996, first published
.
1 Salumedia Tecnologias, Seville, Spain
2 University of Oulu, Oulu, Finland
3 Kliniken Valens, Valens, Switzerland
4 Universidad de Sevilla, Seville, Spain