1. Empirical Software Engineering (M3S) Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu, Finland
2. Division of Human-Computer Interaction, Department Of Applied Information Technology, University of Gothenburg, Gothenburg, Sweden
3. Department of Electronic Technology, Universidad de Sevilla, Seville, Spain
4. Instituto de Investigación en Informática, Universidad de Sevilla, Seville, Spain
5. SABIEN Group, ITACA Institute, Universitat Politécnica de Valéncia, Valencia, Spain
6. Department of Neurology, Kliniken Valens, Rehabilitationszentrum Valens, Valens, Switzerland
7. Health Sciences and Technology Unit, Faculty of Medicine, University of Oulu, Finland
8. Applied Ergonomics and Design, Faculty of Industrial Design Engineering, Delft University of Technology, Delft, The Netherlands
9. Clinical Medicine Neurology, School of Medicine, Trinity College Dublin, Dublin, Ireland