1. Institute of Life Sciences, Sant'Anna School of Advanced Studies, Pisa, Italy
2. Department of Biomedical Engineering, Lund University, Sweden
3. Biomedical Signal Interpretation & Computational Simulation Group, Aragón Institute of Engineering Research, Zaragoza University, Spain
4. Biomedical Engineering Institute, Kaunas University of Technology, Lithuania
5. Department of Clinical Physiology, Skåne University Hospital and Department of Clinical Sciences, Malmö, Lund University, Sweden