Published on in Vol 6 , No 5 (2018) :May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/10512, first published
.

1 University of Oulu, Oulu, FI
2 Salumedia Tecnologias, Seville, ES
3 School of Nursing, Midwifery and Health Systems, University College Dublin, Dublin, IE
4 Universidad de Sevilla, Seville, ES