Published on in Vol 8 , No 9 (2020) :September
Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/18867, first published .
1 Salumedia Tecnologías, Seville, ES
2 The Insight Centre for Data Analytics, School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, IE
3 Oncoavanze, Seville, ES
4 Department of Electronic Technology, Universidad de Sevilla, Seville, ES