1. Department of Signal Theory and Communications, Telematics and Computing Systems, Rey Juan Carlos University, Fuenlabrada, 28943 Madrid, Spain
2. Fundación Canaria Instituto de Investigación Sanitaria de Canarias, 35019 Las Palmas de Gran Canaria, Spain
3. Research Institute for Applied Microelectronics, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
4. Norwegian Centre for E-health Research, University Hospital of North Norway, 9019 Tromsø, Norway
5. Department of Community Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, 9019 Tromsø, Norway
6. Faculty of Nursing and Health Sciences, Nord University, 8026 Bodø, Norway